Monday, December 05, 2022

LG 21FU1RLX - 21FU1RLX-CRT TV – Service adjustments and schematic diagram

 

General Specification

Adjustments

(1)Because this is not a hot chassis, it is not necessary to use an isolation transformer. However, the use of isolation transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.But the adjustment can be changed by consideration of mass production.
(3) The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10% of relative humidity if there is no specific designation.
(4) The input AC voltage of the receiver must keep rating voltage in adjusting.
(5) The receiver must be operated for about 20 minutes prior to the adjustment.
(6) Signal: Received, the standard colour signal.(65dB±1dB uV) LG standard signal means the digital pattern (PAL_EU 05CH,NTSC_US 13CH).

Focus adjustment

(1) Receive the Cross-Hatch Pattern(Fig 1).
(2) Set the picture condition on “DYNAMIC(CLEAR)” mode.
(3) Adjust the Focus volume of FBT, made the focus of the ¼ part vertical line is best.

Purity & Convergence adjustment
Adjustment should be operated when using the CPT (without ITC from CPT manufacturing place)
This adjustment must be done in the order of the following flowchart.

Colour purity adjustment
(1) It makes CPT or CABINET enough to demagnetization.
(2) Receive the signal of red raster.
(3) Unfasten DY and push DY to FUNNEL direction.
(4) Make R-Land be cantered as cross Purity Magnet. That time, 4 & 6 pole magnet should keep free gauss status.
(5) Make uniform RED Raster as moving DY, Check there is purity problem or not on R/G/B, white Raster. Then fix screw of DY.  (At this time, be careful about inclination and DY should be fixed keeping horizontality.)
(6) Check the TV set in direction of EAST, WEST, SOUTH, and NORTH. Adjust with supporting MAGNET when adjustment is not operated.
Convergence adjustment. 
These adjustments should be operated at the best condition of focus after finished purity adjustment.
(1) Receive the signal of cross hatch that BACK RASTER is black.
(2) Adjust brightness so that there are 9 ~12 dots.

(3) Widen two tabs of 4pole Magnet with equal angles and accord red, blue vertical lines at the center of screen.
(4) With keeping angle of "c.clause", rotate tab and accord red/blue, green vertical lines at the center of screen.
(5) Widen two tabs of 6pole Magnet with equal angles and accord red, blue vertical lines at the center of screen.
(6) With keeping angle of "e.clause", repeat the adjustment from c to e keeping in mind the movement of red, blue, green when the horizontal lines are twisted.
(7) Move the DY up, down, left, right and make the convergence to be optimal condition and stick rubber wedge to CPT so that the DY not to move.

Screen voltage adjustment
SCREEN manual adjust method(Used the remote controller)
(1) RF Mode, input the PAL or SECAM(NTSC) signal, every channel is OK.
(2) First LINE SVC MODE(IN-START KEY) and push the ADJ KEY change to the SCREEN adjustment MODE.
(3) Adjust the SCREEN VOL of the FBT, then TV picture will be have a horizontal line, manual adjust the FBT SCREEN VOL, when the horizontal line just disappear is OK
(Press the TV/AV button to exit SVC mode)


Deflection setting Data Adjustment
Adjustment preparation
(1) TV set to receive an Digital pattern(PAL:E5ch.,NTSC: US-12).
(2) Deflection data setting used remote.
(3) Press the LINE SVC MODE(IN-START KEY) into SERVICE MENU, Choice SERVICE2 to adjustment mode.
(4) Press CH+,CH- KEY choice adjust item.
(5) Press VOL+,VOL - KEY increase or decrease DATA.
Adjustment
(1) First, adjust deflection at 50Hz,of PAL signal.  then, adjust deflection at 60Hz, of NTSC signal.
(2) Korea Model only used the N60Hz,adjustment . Adjust vertical inclination of screen.
(3) Central or South America Model first N60Hz adjustment and then N50(PAL-N) adjustment.
(4) When finish the adjustment and press “ENTER" KEY, save data and exit adjustment Mode.
Deflection adjustment small item
(1) V SLOPE
The cutting part(below) of picture transfer to Blanking.
Adjust the geometric vertical center of the CPT is in accord lower blanking.
(2) VS (Vertical Shift)
Adjust so that the horizontal center line of a digital circle pattern is in accord with geometric horizontal center of the CPT.

(3) VL (Vertical Linearity)
Adjust so that the boundary line between upper and lower half is in accord with geometric horizontal center of the CPT(PAL : E5ch., NTSC : US-13.).
(4) VA (Vertical Amplitude)
Adjust so that the circle of a digital circle pattern may be located within the effective screen of the CPT.
NTSC signal : Adjust NTSC 13CH circle as an inscribed circle of vertical outer boundary of the effective screen of the CPT.

(5) HS (Horizontal Shift)
Adjust so that the vertical center line of a digital circle pattern is in accord with geometric vertical center of the CPT 
(6) EW (Horizontal Width)
Adjust to that a digital circle pattern looks like exact circle.(PAL:0~25%,NTSC: 2.5~3.0

(7) EP (East-west Parabola)
Adjust so that middle portion of the outermost left and right vertical line looks like parallel with vertical lines of the CPT.
(8) ET (East-west Trapezium)
Adjust to make the length of top horizontal line same with it of the bottom horizontal line.
(8) ET (East-west Trapezium)
Adjust to make the length of top horizontal line same with it of the bottom horizontal line.
(9) EW UPCOR & EW LOCOR
Adjust until symmetries upper & lower corner of the screen.

(10) BOW
Adjust the left and right crooked line on upper and lower side.

11) H ANGLE
Adjust the vertical slope
(12) S CORRECT (S CORRECTION)
Adjust the receive Patter, keep the lattice's range same(Top/Center/Bottom. This decided by DY data, so according to the CPT's Default data(Initial data) Setting.

 (12) S CORRECT (S CORRECTION)
Adjust the receive Patter, keep the lattice's range same(Top/Center/Bottom)
This decided by DY data, so according to the CPT's Default data(Initial data) Setting.

(13) V SCROLL
Adjust the center vertical line of the geometrical with the CPT center vertical line same.
(14) V ZOOM (fixed) : VERTICAL ZOOM.
(15) WBR (fixed) : Timing of wide Blanking
(16) WBF (fixed) : Timing of wide Blanking
(17) V SYNSLI (fixed) : Vertical slicing level
(18) OVRVOLIN (fixed) : Over voltage input mode
(19)V GUARD (fixed) : Vertical guard mode

Initial data for deflection

Initial data for deflection by model (SERVICE 2)-PAL

Default data



Schematic diagram


Friday, November 25, 2022

Sony HCD-FLX5D Sony HCD- FLX7D amp board schematic, checking, and more

 DRIVE MANUAL OPERATION

Note: This mode is used for design, and not used in service fundamentally.
On the Test Mode Menu screen, press the [2] key on the remote commander, and the Operation Menu will be displayed. For the manual operation, each servo on/off control and adjustment can be executed manually.

In using the manual operation menu, take care of the following points. These commands do not provide protection, thus requiring correct operation. The sector address or time code field is displayed when a disc is loaded.

Note:
1. Set correctly the disc type to be used on the Disc Type screen.
2. In case of an alarm, exit the manual operation menu immediately to stop the servo operation, and press the I/1 button to turn the power off.

Basic operation:
(controllable from front panel or remote commander)
[POWER] : Power OFF (release the Test Mode) Stop and eject/Loading
[RETURN] : Return to Operation Menu or Test Mode Menu
[PREV ], [NEXT ] : Transition between sub modes of menu [1] to [9], [10/0] : Selection of menu items Cursor Up/Down: Increase/Decrease in manually adjusted value

Disc Type check

Disc Type Auto Check.
1) Press the [1] key on the remote commander to display the Disc Type Auto Check screen.
2) Insert a disc and press the [ENTER] key on the remote commander.
3) It judges the type of inserted disc automatically and displays the disc type and so on as below.

Disc Type : CD, DVD or Hybrid (SACD)
Layer : SINGLE, DUAL or HYBRID
Mirr Time : Mirror time of between disc surface and record surface when disc type judgment. (Hexadecimal number)
Mirr Count : The number of times which mirror counts between disc surface and record surface when disc type judging.
FZC Count : The number of times which focus zero cross points of each layer when lens down.
PI Reference: The average of PI reference voltage. (hexadecimal number)
PI Peak : PI peak level voltage. It performs only when disc type judgment is successful. (hexadecimal number)
Disc Type DVD
It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.
[1]: DVD single layer disc (12 cm)
[2]: DVD dual layer disc (0 layer, 12 cm)
[3]: DVD dual layer disc (1 layer, 12 cm)
[4]: DVD-RW disc (12 cm)
[5]: DVD single layer disc (8 cm)
[6]: DVD dual layer disc (0 layer, 8 cm)
[7]: DVD dual layer disc (1 layer, 8 cm)
[8]: DVD-RW disc (8 cm)

Disc Type CD.
It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.
[1]: CD disc (normal speed, 12 cm)
[2]: CD disc (double speed, 12 cm)
[3]: CD disc (normal speed, 8 cm)
[4]: CD disc (double speed, 8 cm)
[5]: CD-RW disc (normal speed, 12 cm)
[6]: CD-RW disc (double speed, 12 cm)
[7]: CD-RW disc (normal speed, 8 cm)
[8]: CD-RW disc (double speed, 8 cm)

Disc Type Hybrid.
It sets up so that it may judge as a disc type of specification of the disc with which the set was inserted.
[1]: SACD Hybrid disc (SACD layer, 12 cm)
[2]: SACD Hybrid disc (CD layer, normal speed, 12 cm)
[3]: SACD Hybrid disc (CD layer, double speed, 12 cm)
[4]: SACD Hybrid disc (SACD layer, 8 cm)
[5]: SACD Hybrid disc (CD layer, normal speed, 8 cm)
[6]: SACD Hybrid disc (CD layer, double speed, 8 cm)

Servo Control.
Note:
Be sure to perform the disc type setup before performing this item.

On this screen, the servo on/off control necessary for replay is executed. Normally, turn on each servo from 1 sequentially and when CLVA is turned on, the usual trace mode becomes active. In the trace mode, DVD sector address or CD time code is displayed.
This is not displayed where the spindle is not locked.
The spindle could run overriding the control if the spindle system is faulty or RF is not present. In such a case, do not operate CLVA.
[1] LD : Turn on/off the laser.
[2] Focus : Search the focus and turn on the focus.
[3] SPDL : Turn on/off the spindle.
[4] CLVA : Turn on/off normal servo of spindle servo.
[5] Trk. : Turn on/off the tracking servo.
[6] Sled : Turn on/off the sled servo.
[7] FCS. Srch : Turn on/off the focus search.
[8] FCS. OppL : Turn on/off the focus search to another (oposite) layer of designated layer in Disc
Type setting. (dual layer disc only) [10/0] : All servo off.
(right cursor) : Move the sled forward.
(left cursor) : Move the sled reverse.
(up cursor) : Reset the sled.
(down cursor) : Limit in the sled.

Track/Layer Jump.

On this screen, track jump, etc. can be performed. Only for the DVD dual layer disc, the focus jump and layer jump are displayed in the right field
[1] 1Tj FWD : 1 track jump forward.
[2] 1Tj REV : 1 track jump reverse.
[3] 500Tj FWD : 500 track jump (fine search)forward.
[4] 500Tj REV : 500 track jump (fine search) reverse.
[5] 10kTj FWD : 10k track jump (direct search) forward.
[6] 10kTj REV : 10k track jump (direct search) reverse.
[7] 20kTj FWD : 20k track jump (direct search) forward.
[8] 20kTj REV : 20k track jump (direct search) reverse.
LjL0 t L1 : Layer jamp L0 t L1
LjL1 t L0 : Layer jamp L1 t L0
FjL0 t L1 : Focus jamp L0 t L1
FjL1 t L0 : Focus jamp L1 t L0
[10/0] : All servo off.

Non EEPROM Write Adjust.

On this screen, each item can be adjusted automatically. Select the desired number [1] to [10/0] from the remote commander. This value is not stored in the EEPROM.
[1] Focus Offset : Adjusts focus offset.
[2] Focus Gain : Adjusts focus gain.
[3] TRK. Offset : Adjusts tracking offset of the RF amp (IC001) side.
[4] TRK. Offset : Adjusts tracking offset of the DSP (IC401) side.
[5] TRK. Gain : Adjusts track gain.
[6] EQ Boost : Adjusts amount of boost of equalizer.
[10/0] : All servo off.

EEPROM Write Adjust.

On this screen, each item can be adjusted automatically. Select the desired number [1] to [10/0] from the remote commander, and selected item is adjusted automatically. Thus value is stored in the EEPROM.
[1] Focus Offset : Adjusts focus offset.
[2] Focus Gain : Adjusts focus gain.
[3] TRK. Offset : Adjusts tracking offset of the RF amp (IC001) side.
[5] TRK. Gain : Adjusts track gain.
[6] EQ Boost : Adjusts amount of boost of equalizer.
[10/0] : All servo off.

Memory Check.
Display images are shown as follows, and all two screens are able to switch by the key (UP) or key (DW)

On this screen, current servo adjusted data stored in the EEPROM are displayed. The adjusted data are initialized by pressing the [CLEAR] key, but be careful that they are not recoverable after initialization.
Before clearing the adjusted data, make a note of the set data.

Mark Check.

On this screen, measure the PSP AMP value and Disc Check Memory

On this screen, measure the mirror time of chucked disc, and write to the EEPROM

Error Rate Display

On this screen, measure and display the error rate.
UC : Incorrect value
CR : Correct value

SACD Water PSN value of SACD water mark.

MECHA AGING.
On the Test Mode Menu screen, selecting [3] executes the aging of the mechanism deck.

Set over-40-min. CDs in Disc 1 to 5.
2) On the Aging Test MENU screen, press the [1] key on the remote commander to display the Open/Close Test screen.
3) Insert discs and press the [ENTER] key on the remote commander.
4) Is starts the aging.
During aging, the disc number, operating status and repeat cycle are displayed. Aging can be aborted at any time by pressing the [RETURN] key. After the operation is stopped, press the [RETURN] key aging to return to the Aging Test MENU.
EMERGENCY HISTORY
On the Test Mode Menu screen, selecting [4] displays the information such as servo emergency history.
The history information from last 1 up to 10 can be scrolled with the O key or o key. Also, specific information can be displayed by directly entering that number with ten keys.

xxxxhxxm: The laser on total hours. Data below minutes are omitted.
a. : Error number.
bb : Error code.
xx : Not used.

Clearing History Information.
Clearing laser hours:
Press the [DVD DISPLAY] and [CLEAR] keys in this order.
Then both CD and DVD data are cleared.
Clearing emergency history:
Press the [DVD TOP MENU] and [CLEAR] keys in this order.
Initializing EEPROM data:
Press [DVD MENU] and [CLEAR] keys in this order.
The data have been initialized when “EEPROM Initialize Finished” message is displayed, press the [RETURN] key to return to the EMG. History screen.

Code list of Emergency History.
10: Communication to RF AMP (IC001) failed.
11: Each servo for focus, tracking, and spindle is unlocked.
12: Check sum error of EEPROM (IC903).
14: Communication to servo DSP (IC509) failed, or servo DSP (IC509) is faulty.
15: Communication to DVD decoder (IC701) failed, or DVD decoder (IC701) is faulty.
16: Communication to DSD decoder (IC801) failed, or DSD decoder (IC801) is faulty.
20: Initialization of sled servo failed. It is not placed in the initial position.
23: Sled servo operation error.
24: Made a request to move the sled servo to wrong position.
30: Tracking balance adjustment error.
31: Tracking gain adjustment error.
33: Focus bias adjustment error.
34: Focus gain adjustment error.
35: Equalizer adjustment error.
40: Focus servo does not operate.
41: With a DVD dual layer disc, focus jump failed.
50: CLV (spindle) servo does not operate.
51: Spindle does not stop.
60: Made a request to seek nonexistent address.
61: Seek error of retry more than regulated times.
70: Control data could not be read.
80: Disc reading failed.

MECHA ERROR HISTORY.
On the Test Mode Menu screen, selecting [5] displays the information of mechanism deck error history.
The history information from last 1 up to 8 can be scrolled with the UP key or DN key. Also, specific information can be displayed by directly entering that number with ten keys.

aa : The error in the midst of initializing the mechanism deck.
bb : The error in the midst of loading operation.
cc : The error in the midst of up/down the stocker.
dd : The error in the midst of switching the mechanism deck mode.
xx : Not used.

VERSION INFORMATION.
On the Test Mode Menu screen, selecting [6] displays the ROM version and region code.
The parenthesized hexadecimal number in version field is checksum value of ROM.
Version Information
IF con. Ver.x. xxx
SYScon. Ver.x. xx (xxxx)
Model DHC-FLxx
Region 0x
Config xxxxxxxx
Front End Ver.x.xx
Exit: RETURN
IF con. : The version of system controller (IC101).
SYScon. : The version of DVD system processor (IC206).
Front End: The version of mechanism controller (IC901).
7. VIDEO LEVEL ADJUSTMENT
On the Test Mode Menu screen, selecting [7] displays color bars
for video level adjustment. During display of color bars, OSD disappears but the menu screen will be restored if pressing the [RETURN] key

RF board schematic.

Front Rear amplifier board schematic.

Centre amplifier board schematic.


Monday, November 21, 2022

Sony HCD-FLX5D - Sony HCD FLX7D DVD DECK RECEIVER Ver 1.0 2004.04 -Adjustments - E Model: HCD-FLX5D and FLX7D. Australian Model: HCD-FLX5D

 

HCD-FLX5D and FLX7D are the amplifier, DVD player, tape deck and tuner section in DHC-FLX5D and FLX7D.

DVD Mechanism Type: CDM53N-DVBU14, Base Unit Name: DVBU14, Optical Traverse Unit Name: DBU-1

Continuous RMS power output (reference)
Front speaker: 120 + 120 watts
(8 ohms at 1 kHz, 10% THD)
Sub woofer: 240 watts (8 ohms at 100 Hz, 10% THD)

DIN power output at stereo mode (rated) 45 + 45 watts (8 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 60 + 60 watts (8 ohms at 1 kHz, 10% THD)
Centre speaker: 60 watts (16 ohms at 1 kHz, 10% THD)
Rear speaker: 60 + 60 watts (8 ohms at 1 kHz, 10% THD)
Sub woofer: 100 watts (8 ohms at 100 Hz, 10% THD)

RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.
Releasing Procedure
Press two buttons of Up (DVD) and [Stop] simultaneously for five seconds. The message “UNLOCKED” is displayed and the tray is unlocked.
Note: When “LOCKED” is displayed, the tray lock is not released by turning power on/off with the [Power] button.

NOTE OF REPLACING THE MB BOARD
When replacing the MB board, since the adjustment value is not set up correctly, “Drive Auto Adjustment” can’t be performed.
In this case, initialize Memory in the following procedures.
Procedure:
1. Set the test mode.
2. Press the [2] key of the remote commander, and set the “DRIVE MANUAL OPERATION”.
3. Press the [6] key of the remote commander, and set the “2-6, Memory Check”.
4. Press the [CLEAR] key of the remote commander, and initialize Memory.

DVD MECHANISM DECK SERVICE POSITION
In checking the DVD mechanism deck section (CDM53N-DVBU14), prepare extension jig (Part No. J-2501-103-A: 1.00 mm Pitch, 29 cores, Length 300 mm).

DSP/GC/MB/MC/REGULATOR AND VIDEO BOARDS SERVICE POSITION

IC501 SERVICE POSITION

Setting the clock

1 Turn on the system.
2 Press CLOCK/TIMER SET on the remote.
3 Press |<< or >>|repeatedly to set the hour.

4 Press ENTER on the remote.
5 Press |<<or >>|repeatedly to set the minutes
6 Press ENTER on the remote.

To adjust the clock
1
Press CLOCK/TIMER SET on the remote.
2 Press |<< or |>> repeatedly to select  “CLOCK SET?”, then press ENTER on the remote.
3 Do the same procedures as step 3 to 6 above.

Note
The clock settings are canceled when you disconnect the power cord or if a power failure occurs.

Cold reset

The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customer.
Procedure:
1. Press three buttons [Stop ], [DISPLAY], and [GROOVE] simultaneously.
2. The fluorescent indicator tube becomes blank instantaneously, and the set is reset.


[TUNER STEP CHANGE]
(Except FLX5D: Saudi Arabia/FLX7D: Saudi Arabia models)
A step of AM channels can be changed over between 9 kHz and 10 kHz.
Procedure
1. Press the [Power] button to turn the power on.
2. Select the function “TUNER”, and press [TUNER/BAND] button to select the BAND “AM”.
3. Press the [Power] button to turn the set OFF.
4. Press >>+ and [Power] buttons simultaneously, and the display of fluorescent indicator tube changes to “AM 9 K Step” or “AM 10 K Step”, and thus the channel step is changed over.
[FUNCTION CHANGE MODE]
Select either VIDEO or MD of the external function input.
Procedure:
1. Press the [Power] button to turn the power on.
2. Hold down [VIDEO (SAT)] button then press [Power] button, and release [Power] button first in order not in switch off the set immediately.
The another function of the previous function is selected, the input level is also changed and displayed “SAT” or “VIDEO”.

GC TEST MODE]
This mode is used to check the software version, FL tube, LED, keyboard and VACS.
Procedure:
1. Press three buttons [Stop], [DISPLAY], and [EFFECT] simultaneously.
2. LEDs and fluorescent indicator tube are all turned on.
3. When you want to enter the software version display mode, press [GROOVE] . The model number and destination are displayed.
4. Each time [GROOVE] is pressed, the display changes stating from MC version, GC version, DP version, DVD version, CDDM, CDMA, CDMB, BDA, BDB, ST version, TA version, TM version, TC version, in this order.
5. When [CD SYNC HI-DUB] is pressed while the version numbers are being displayed except model number and destination, year, month and day of the software creation appear. When [CD SYNC HI-DUB] is pressed again, the display returns to the software version display. When [GROOVE] is pressed while year, month and day of the software creation are being displayed, the year, month and day of creation of the software versions are displayed in the same order of version display.
6. Press [EFFECT] button, and the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays “KXX V0 C T”. Each time a button is pressed, “K” value decreases.
However, once a button is pressed, it is no longer taken into account.
“V” value increases like 1, 2, 3...if rotating [VOLUME] knob in the clockwise, or it decreases like 0, 9, 8...if rotating in the counter clockwise.
Each time the “CD DOOR LOCK DETECT” or “CD DOOR OPEN/CLOSE DETECT” switch is turned on, “C” value increases.
Each time the “CASSETTE LID OPEN/CLOSE DETECT” switch is pressed, “T” value increases.
8. Also when [GROOVE] is pressed after lighting of all LEDs and fluorecsent indicator tube, value of VACS appears.
9. To exit from this mode, press three buttons in the same manner as step 1, or disconnect the power cord.

MC TEST MODE]
This mode is used to check operations of the respective sections
of Amplifier, Tuner, and Tape.
1. Entering the MC Test Mode
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the three buttons of [Stop], [DISPLAY] and [CD SYNC HIDUB] simultaneously.
3. The segments blinks on the fluorescent indicator tube as bellow.

Releasing the MC Test Mode
Procedure:
1. To release this mode, press the [Power] button.
2. The cold reset is enforced at the same time.
3. Check of Amplifier
Initial settings:
Input , DIGITAL
EQ , FLAT
Mode , MUSIC
VACS , OFF
Output channel setting:
Each time the [EFFECT] button is pressed, output channels switch as following order.

Volume check:
1. When the [VOLUME] knob is turned clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME MAX” appears for two seconds, then the display returns to the original display.
2. When the [VOLUME] knob is turned counter clockwise even slightly, the sound volume decreases to its minimum and a message “VOLUME MIN” appears for two seconds, then the display returns to the original display.
Tuner Function
1. In the test mode, the default-preset channel is called even when the TUNER is selected and an attempt is made to call the preset channel that has been stored in memory. (It means that the memory is cleared)
2. The minimum, center and maximum frequency of each band is set then.

Tape Recording Test
Procedure:
1. Enter the MC Test Mode.
2. Load tapes in both tape decks A and B.
3. Press the REC button to start recording.
4. Pressing the (- <<)or (>>+) buttons during recording returns
the tape to the recording start position and stops it at this position.
5. Pressing the “High Speed Dubbing” key while playing back the tape of deck B switches the playback speed between “Normal Speed” and “High Speed”.
Note:
When the playback direction of the tape is set to other than “ONY WAY”, the restriction on the number of times playback which can be repeated will be cleared.

AMS Test Mode
Procedure:
1. Enter the MC Test Mode and press the [TAPE A/B] button to set the TAPE function.
2. Insert a test tape AMS-110A or AMS-120 to deck A.
3. Press the >>| button to enter the AMS test mode.
4. After a tape is rewound first, the FF AMS is checked, and the mechanism is shut off after detecting the AMS signal the AMS signal twice.
5. Then the REW AMS is checked and the mechanism is shut off after detecting the AMS signal twice.
6. When the check is complete, a message of either OK or NG appears.
ALC MODE
Procedure:
1. Enter the MC Test Mode and press the [REC PAUSE/START] button 2 times to recording start.
2. While pressing the |<< button, ALC is on. (normaly, ALC is off in recording state.)
[DVD SHIP MODE (MEMORY CLEAR) ]
This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press three buttons Stop[CD SYNC HI-DUB] and [DVD] simultaneously.
3. After the “STANDBY” display blinks, a message “LOCK” is displayed on the fluorescent indicator tube, and the CD ship mode is set.

[DVD SHIP MODE (NO MEMORY CLEAR) ]
This mode moves the optical pick-up to the position durable to vibration. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [DVD] and [Power] buttons simultaneously.
3. After the “STANDBY” display blinks, a message “LOCK” is displayed on the fluorescent indicator tube, and the CD ship mode is set.
[VACS ON/OFF MODE]
This mode is used to switch on or off the VACS (Variable Attenuation Control System).
Procedure:
1. Press two buttons of  >>| and [A Up] for more than 1 second simultaneously.
2. When VACS is switch on, it displays “VACS OFF”.
When VACS is switch off, it displays “VACS O”.

CD REPEAT 5 LIMIT OFF MODE]
Number of repeat for CD playback is 5 times when the repeat mode is “REPEAT”. This mode enables CD to repeat playback for limitless times.
Procedure:
1. Press the [Power] button to turn the power on, and press the [DVD] button to select the function “DVD”.
2. Press two buttons of >>| and [CD SYNC HI-DUB] for more than 1 second simultaneously to enter the CD repeat 5 limit off mode.
3. To release this mode, operate the cold reset. (Refer to the “MC COLD RESET”)

[DISC TRAY LOCK]
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [DVD] button to select the function “DVD”.
3. Press two buttons of UP (DVD) and Stop simultaneously for five seconds.
4. The message “LOCKED” is displayed and the tray is locked.  (Even if exiting from this mode, the tray is still locked)
5. To exit from this mode, press two buttons of UP (DVD) and Stop simultaneously for five seconds again.
6. The message “UNLOCKED” is displayed and the tray is unlocked.

DVD Test Mode

The Test Mode allows you to make diagnosis and adjustment easily using the remote commander and monitor TV. The instructions, diagnostic results, etc. are given on the on-screen display (OSD)

[TEST DISC LIST]
Use the following test disc on test mode.
TDV-520CSO (DVD-SL): PART No. J-2501-236-A LUV-P01 (CD): PART No. 4-999-032-01 TDV-540C (DVD-DL): PART No. J-2501-235-A
Note: Do not use existing test disc for DVD.

STARTING DVD TEST MODE]
1. Press the [Power] button to turn the power on.
2. Select the function “DVD”.
3. Press the [Power] button to turn the power off.
4. While pressing the Stop button, press the UP  (DVD) button and turn the [VOLUME] knob in the clock wise.
5. It displays “SERVICE IN” on the fluorescent indicator tube, and displays the Test Mode Menu on the monitor screen as follows. (At the bottom of the menu screen, the model name and revision number are displayed)

To execute each function, select the desired menu and press its number on the remote commander (RM-SFL7).
7. To release from test mode, press the Power button and turn the power off.


 Quit
Quit the Syscon Diagnosis and return to the Test Mode Menu.

All (All items continuous check)
This menu checks all diagnostic items continuously. Normally, all
items are checked successively one after another automatically unless an error is found, but at a certain item that requires judgment through a visual check to the result, the following screen is displayed for the key entry.

For the ROM Check, the check sum calculated by the Syscon is output, and therefore you must compare it with the specified value for confirmation.
Following the message, press the [NEXT >>| ] button to go to the next item, or press the [PREV |<< ] button to repeat the same operation again.
To quit the diagnosis and return to Check Menu screen, press the [RETURN] key on the remote commander to display Check Menu.

Error occurred
If an error occurred, the diagnosis is suspended and error is displayed.
Press the [RETURN] key on the remote commander to quit the diagnosis, or press the [PREV |<< ] button to repeat the same check where an error occurred, or press the [NEXT >>|] button to continue the check from the item next to faulty item.

General Description of Checking Method
Selecting 2 and subsequent items calls the submenu screen of each item. And selecting 2 and subsequent items executes respectivemenus and outputs the results.
For the contents of each submenu, see “Check Items List” as below.

Check Items List:
0-2. Version
0-2-1. All
0-2-2. Revision
0-2-3. ROM Check Sum
0-2-4. Model Type
0-2-5. Region
0-3. EEPROM Check
0-3-1. Sampling Check
0-4. GP I/O Check
0-5. SD Bus Check
0-6. Video Check
0-7. Audio Check

Version
Revision
The revision number of ROM (IC204) that the program for the DVD system processor (IC206) is stored.
(4 digits hexadecimal number)
ROM Check Sum
The revision number of ROM (IC204) that the program for the DVD system processor (IC206) is stored.
Model Type
Model name is displayed. (DHC-FL5D or DHC-FL7D)
Region
Model destination code is displayed. (2 digits number)
EEPROM Check
Sampling Check
EEPROM check at every 64 words.
It compares read data with write data of each address. When there are discrepancies between two data, it displays error.
Detail Check
EEPROM check at every 1 word.
It compares read data with write data of each address. When there are discrepancies between two data, it displays error.
0-4. GP I/O Check
Pull up/down setting check of the DVD system processor (IC206) pin 150, 151 and 154 (for clock setting port).
0-5. SD Bus Check
SD bus data check between DVD decoder (IC701) and MPEG DECODER (IC206).
0-6. Video Check
Output the color bars for video level adjustment.
0-7. Audio Check
Output the test signal (1kHz sine wave) for 2 CH test.

DRIVE AUTO ADJUSTMENT
On the Test Mode Menu screen, press the [1] key on the remote commander, and the Adjustment Menu will be displayed.

Normally, [10/0] is selected to adjust DVD (single layer), CD and
DVD (dual layer) in this order. But, individual items can be adjusted for the case where adjustment is suspended due to an error.
In this mode, the adjustment can be made easily through the operation following the message displayed on the screen.
The disc used for adjustment must be the one specified for adjustment.
1-0. ALL
Press the [10/0] key on the remote commander, and the servo set data in EEPROM will be initialized. Then, 1. DVD-SL disc, 2. CD disc and 3. DVD-DL disc are adjusted in this order.
Each time one disc was adjusted, it is ejected. Replace it with the
specified disc following the message. You can finish the adjustment by pressing the [RETURN] button on the remote commander.
Note: During adjustment of each disc, the measurement for disc type judgment is made. As automatic adjustment does not judge the disc type unlike conventional models, take care not to insert wrong type discs. Also, do not give a shock during adjustment.
1-1. DVD-SL (single layer)
Press the [1] key on the remote commander and insert a DVD single layer disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the
EEPROM.
1-2. CD
Press the [2] key on the remote commander and insert a CD disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the EEPROM.
1-3. DVD-DL (dual layer)
Press the [3] key on the remote commander and insert a DVD dual layer disc following the message. Then the adjustment will be made through the steps, then adjusted values will be written to the EEPROM.


Schematics and more details by the next post

Friday, November 11, 2022

JBL BOOMBOX – How to upgrade the software (Firmware)

 

JBLBOOMBOXBLKAM, JBLBOOMBOXBLKEU, JBLBOOMBOXBLKAS, JBLBOOMBOXBLKCN, JBLBOOMBOXBLKJN, JBLBOOMBOXGRNAM, JBLBOOMBOXGRNEU, JBLBOOMBOXGRNAS, JBLBOOMBOXGRNCN, JBLBOOMBOXGRNJN, JBLBOOMBOXBLKBR, JBLBOOMBOXGRNBR, JBLBOOMBOXSQUADAM, JBLBOOMBOXSQUADEU, JBLBOOMBOXSQUADAS, JBLBOOMBOXSQUADCN, JBLBOOMBOXSQUADJN, JBLBOOMBOXSQUADBR.

Portable Bluetooth Speaker with passive bass radiators, 10000 mAh(7.4V) battery for 24 hours of playtime and charging of other devices through dual USB, and IPX7 waterproof.

How to upgrade the software

1. Plug in the DC plug of adaptor and connect micro USB to your computer.

2. Power on the product.
3. Long press Vol + and BT button together 10 seconds to enter DFU mode. If success, Power button and Connect + flash light blue and white correspondingly.
4. Use ‘HID_DFU_PC_Tool_LocalUpgrade’ tool to upgrade the firmware (Remark: Provided by Harman software team)
5. Double click ‘HidDfuUI.exe’ file.

6. ‘Harman HID DFU Tool’ window pops out. It shows device in the list. Then, click ‘OK’.

7. Select the dfu file that you want to upgrade. Then, click ‘Start Upgrade’.

8. Click ‘Yes’ if you want to continue the upgrade.

9. Start firmware upgrade.

10. After upgrade success, click ‘Finish’.

11. Check firmware version by long press Connect + and Vol - . The product can speak the firmware version.


Thursday, November 03, 2022

LG OLED TV - OLED65G2**A – How to update the software (Firmware) CHASSIS: E*21G

 



SOFTWARE UPDATE: USB DOWNLOAD
(1) Plug in the USB to the TV
(2) If there are update-able files in the USB, the TV would ask that the user want to process the SW upper version update.

2. NSU DOWNLOAD
(This Function is needed to connect to the internet.)

Case 1) Auto Update On
(1) Go to Menu → All Settings → Support → Software Update, then check Auto update is turned on.

(2) After the update complete, the user can check a pop-up below the picture, which indicated update is complete and the new version will be applied after the TV turn off and on.

(4) If the user started the update, the TV shows a pop-up below the picture.

(5) [CHECK NOW] : Just start the update.
[Close] : Close the pop-up.

For USB Download:

Follow the Step (1} and (2) first.  Then continue

(3) Click “Yes” button : Start Update

4) Click “Check Now” : Go to SW Update menu for monitoring
(5) TV has been starting SW update.

(6) After finishing the update, it will show a pop-up below the picture.

(7) Click “Yes” : TV will be turn off and on itself.

(4) If it needs to cancel the update, click “cancel update” button

(5) [“No”] : update continue.
[“Yes”] : update cancel.

Case 2) NOT Allow Automatic Updates
Toggle Item
(1) Go to Menu → All Settings → Support → Software Update

(2) If it found upper version SW than the TV SW version, TV would show a pop-up like below the picture.
“The latest version of the SW is available for your TV. Do you want to update now”

(3) [Yes] : update starts.
[No] : Close the pop-up, check out later.