Sony CMT-X3CD PERSONAL AUDIO SYSTEM – troubleshooting, resetting, disc lock and releasing, How to eject disc at emergency, Exploded view and more

 

REMOTE COMMANDER (RM-AMU212)

Mechanism Type: T33DS

Optical Pick-up Block Name: S76RFS7GP

Amplifier section
Power output (rated): 8 watts + 8 watts (at 8 ohms, 1 kHz, 1% THD)
RMS power output (reference):
10 watts + 10 watts (per channel at 8 ohms, 1 kHz)

Speaker section
Speaker system: Full-range speaker,  Passive radiator
Rated impedance: 8 ohms

Power requirements:
AC 120 V - 240 V, 50 Hz/60 Hz
(Singapore and Thai models)
AC 110 V - 240 V, 50 Hz/60 Hz (Taiwan model)
AC 220 V - 240 V, 50 Hz/60 Hz (Korean model)

The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.

CAPACITOR ELECTRICAL DISCHARGE PROCESs
When checking the board, the electrical discharge is necessary for the electric shock prevention.
Connect the resistor to both ends of respective capacitors.

MODEL IDENTIFICATION
Distinguish by Part No. of model number label stuck on the bottom side of a main unit.
Note: The printed contents of following figure model number label may be different from the model number label of a main unit.

When each boards installed in this unit are defective, individual electrical parts that the mount is done cannot be replaced. When each boards are defective, replace the mounted board or the whole parts including an applicable board.
NOTE THE REPLACING OF MA BOARD OR NFC MODULE
When replacing the MA board or the NFC module, be sure replace both at the same time.
The MA board or the NFC module cannot replace with single.
TEST DISCS
Use following TEST DISC (for CD) when this unit confirms the operation and checks it.
Part No. Description

3-702-101-01 4-225-203-01 J-2501-307-A

DISC (YEDS-18), TEST DISC (PATD-012), TEST DISC (HLX-A1), TEST

RELEASING THE DISC SLOT LOCK
The disc slot lock function for the antitheft of sample disc in the shop is equipped.

Releasing Procedure:
1. Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for five seconds.
3. The message “UNLOCKED” is displayed on the fluorescent indicator tube and the disc slot is unlocked.
Note: When “LOCKED” is displayed, the disc slot lock is not released by turning power on/off with the [Power] button.

 No Display When You Turn the Main Unit ON, When you plug power cord and turn the main unit on, VFD won’t display.
1. Check PW board +13V DC output.
2. Check MA board output -24V from U18 on the MA board.  If -24V is not normal, check the working status of U18 on the MA board.
3. Check +3.3V from U3 on the MA board.  If +3.3V is not normal, check the working status of U3 on the MA board.
4. Check the waveform of Y1 on the MA board, the waveform of Y1 on the MA board sine wave.  If the waveform of Y1 on the MA board is not normal, check Y1 on the MA board.

When You Plug Power Cord and Turn The Main Unit ON, The Main Unit Won’t Have Sound
1. Check U6 on the MA board and its peripheral circuit.
2. Check voltage +3.3V from pin 33, pin 60, pin 63, pin 70, pin 72, pin 78, pin 83 and pin 90 of U6 on the MA board.  If the voltage +3.3V is not normal, check +3.3V power circuit of MA board.
3. Check voltage +1.2V from pin 11, pin 77 and pin 86 of U6 on the MA board.  If the voltage +1.2V is not normal, check +1.2V power circuit of MA board.
4. Check if oscillating frequency 27 MHz of Y1 crystal on the MA board is normal.  If the oscillating frequency 27 MHz is not normal, check if Y1 on the MA board and its peripheral circuit is in failure.
5. Check if the status of U17 and U25 on the MA board works well, the normal status of pin 27 of U25 on the MA board is sine wave with frequency 11.0592 MHz. And pin 23 of U25 on the MA board is high in normal status.  If pin 27 of U25 on the MA board wave is not normal, check if U17 and U25 on the MA board and its peripheral circuit is in failure.

When You Plug Power Cord and Turn The Main Unit ON, The Main Unit Won’t Read Disc Normal
1. Check U6 on the MA board signal and its peripheral circuit, and check +3.3V from pin 8 of U5 on the MA board is normal.  If +3.3V is not normal, check +3.3V power circuit of MA board.
2. Check every signal connected between U5 and U6 on the MA board, especially including DATA, CLK and CS signal.  If DATA, CLK and CS signal is not normal output, check if U6 on the MA board is in failure.
3. Check if +5V from pin 8, pin 19 and pin 21 of U7 on the MA board is normal.  If +5V is not normal, check +5V power circuit of MA board.
4. Check every signal connected between U6 and U7 on the MA board, especially FOCUS_S, SPDL_S, XOPVIN1, SLED_S, TRACK_S, VREF2 and DRVSB signal to drive MD.  If FOCUS_S, SPDL_S, XOPVIN1, SLED_S, TRACK_S, VREF2 and DRVSB signal is not normal output, check if U7 on the MA board is in failure.

When You Plug Power Cord and Turn The Main Unit ON, The Wireless Set Can’t Connect The Bluetooth of the Main Unit.
1. Check +3.3V from pin 29 and pin 32 of U13 on the MA board.  If +3.3V is not normal, check +3.3V power circuit of MA board.
2. Check U13 on the MA board signal and its peripheral circuit, make sure U13 is in failure or not. 3. Touch the NFC, you can’t awake the Main Unit, but you can connect the Bluetooth directly, check the connection between the NFC module and the MA board.
If the connection is normal, check the NFC module.

HOW TO EJECT THE DISC WHEN POWER SWITCH TURN OFF or there is No Power

SOFTWARE VERSION
It can confirm the software version.
1. Press the [Power] button to turn the power on.
2. Press the [ PAIRING FUNCTION] button to turn the CD function.
3. Press the button on the remote commander as following order. [CREAR] → [B] → [RETURN]
(Displayed values in the following figure are example)

4. The software version display disappears in about 7 seconds, and it returns to the display of the normal mode.

FACTORY RESET
It can clear all settings and the Bluetooth link history to initial conditions. Execute this mode when returning the this unit to the customer.
1. Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [Eject] simultaneously for five seconds.
3. The message “RESET” is displayed on the fluorescent indicator tube, then returns to the normal mode.

DISC SLOT LOCK
It can be unable to take sample disc out of disc slot in the shop.
1. Press the [Power] button to turn the power on.
2. Insert a disc in the unit.
3. Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for five seconds.
4. The message “LOCKED” is displayed on the fluorescent indicator tube and the disc slot is locked.
(Even if pressing the [Eject] button, the message “LOCKED” is displayed on the fluorescent indicator tube and the disc slot is locked)

Releasing method:
1. Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for five seconds.
2. The message “UNLOCKED” is displayed on the fluorescent indicator tube and the disc slot is unlocked.

VFD TEST
It can confirm the fluorescent indicator tube.
1. Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [VOL+] simultaneously for five seconds.
3. All segments on the fluorescent indicator tube light up.

4. All segments turn off the light in about 3 seconds, and it returns to the display of the normal mode.

Bluetooth ON/OFF
It can turn on or off the wireless signal of Bluetooth.
1. Press the [Power] button to turn the power on.
2. Press the [ PAIRING FUNCTION] button to turn the BT AUDIO function.
Note 1: When the Bluetooth function to select the “BT AUDIO” in the state off, the “BT OFF” is displayed.
3. Press two buttons of the [ >|| ] and [VOL +] simultaneously for five seconds.
4. The message “BT ON” or “BT OFF” is displayed on the fluorescent indicator tube, it turn on or off the wireless signal of Bluetooth.
Note 2: When the Bluetooth function is the state off, when performed the NFC one touch connection or the power off to unplug the AC power cord, Bluetooth function is switched on from off.

Block diagram

Wiring diagram

SMPS [Power supply] board schematic diagram

Exploded views

Sony MHC- V41D HOME AUDIO SYSTEM disassembly procedure, self diagnostic function, destination setting method

 

AEP Model, UK Model, Australian Model, Latin American Model

Model Name Using Similar Mechanism:  MHC-V44D/V50D

DVD Mechanism Type: CDM90-DVBU204

Optical Pick-up Block Name;  CMS-S76RFS7G1 or CMS-S76RFS7GP

Self-diagnosis function

When letters/numbers appear on the TV screen or the display
When the self-diagnosis function is activated to prevent the system from malfunctioning, a service number appears. The service number consists of an alphabet and numerals (e.g. C 13 50). See the following table for the cause and corrective action.

C 13: This disc is dirty.
Clean the disc with a soft cloth.

C 31: The disc is not inserted correctly.
 Turn off the system, then turn it back on again. Then re-insert the disc correctly.

E XX (XX is a number):

To prevent a malfunction, the system has performed the self-diagnosis function.
Contact your nearest Sony dealer or local authorized Sony service facility and give the 5-character service number.
Example: E 61 10.

IMPORTANT NOTE OF PERFORMING THE OPERATION CHECK
When performing the operation check of this unit, be sure to perform the operation check after checking that it is in the following state.

Heat sink is installed to MOTHER board
Fan motor is connected to MOTHER board
Note: If turn the power on in the state that heat sink is not installed, there is a possibility of damage.
Also, be sure to perform the operation check in the connect the fan motor to the MOTHER board, and the fan motor is rotating state.
If it is necessary to perform the operation check with the heat sink removed or the fan motor removed, set the volume to 10 or less and perform the operation check within 1 minute.

If “PROTECTX” (X is a number) APPEARS ON THE DISPLAY, THEN “CHECK MANUAL” FLASHES ON THE DISPLAY.
Immediately unplug the AC power cord (mains lead), and check if anything is blocking the ventilation openings of the unit.
After you have checked and found no problems, reconnect the AC power cord (mains lead), and turn on the system.

CAPACITOR ELECTRICAL DISCHARGE PROCESSING
When removing the MOTHER board and SMPS board after checking the operation of this unit, be sure to perform the discharge processing of C2076 on the MOTHER board and C6302 on the SMPS board before removing the boards.
When it is removed the boards without performing the discharge processing and it is shorted the both end of C2076 on the MOTHER board, it might be damaged the DAMP IC.
Perform the discharge processing with referring the figure below.
Note: Be sure to discharge using a resistor of 800 W or higher.

MODEL IDENTIFICATION
Distinguish by destination code on the rear side of the main unit.

DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used.
Abbreviations
AEP : European area (Except for Ireland, UK), East European area, CIS area (Moldova) and Middle East area (Jordan) models
AUS : Australian and New Zealand models

LA: Latin American area (Except for Argentina, Brazil) model.

UK: UK and Ireland models

DESTINATION SETTING METHOD

NFC OPERATION CHECKING METHOD
When the MOTHER board is replaced, it is necessary to check that pairing is normally performed.
Perform the operation check according to the following procedure.

[Be sure to delete paring information after checking the pairing]

Necessary Equipment
NFC-compatible Smartphone
Note 1: Smartphones with a built-in NFC function (OS: Android 2.3.3 or later, excluding Android 3.x).
Note 2: If the NFC-compatible Smartphone has an OS version that is older than Android 4.1.x, download and install the “NFC Easy Connect” application.

Connection Method
1. Turn on the NFC function of the Smartphone.
If the NFC-compatible Smartphone has an OS version that is older than Android 4.1.x, start the “NFC Easy Connect” application.
2. Press the [Power] button to turn the power on.
3. Touch the Smartphone to the N-Mark on this unit.

4. When the NFC connection is completed, connected Smartphone name is displayed on the vacuum fluorescent display.
5. Start the playback of an audio source on the Smartphone.
Note 3: For details, refer to the operating instructions of Smartphone..

Connection Releasing Method
Touch the Smartphone to the N-Mark on this unit again.

Deletion of Pairing Information
Perform the “COLD RESET”

CHECKING THE OPERATION AFTER REPAIR
After repair completion, connect the “iPhone/iPod”, “Walkman”,
“Smartphone” etc. corresponding to this unit, and check the operation of playback, recording, charge, etc.
NOTE OF REPLACING THE ELECTRICAL PARTS ON EACH BOARD FOR REPAIRING
Among mounted electrical parts on each board, only parts that are described in the electrical parts list can be replaced for repairing.
The parts that are not described in the electrical parts list cannot be replaced with single for repairing.
NOTE OF REPLACING THE MOTHER BOARD FOR REPAIRING
Among mounted parts on the MOTHER board, only parts that are described in the electrical parts list can be replaced for repairing.
When the parts that are not described in the electrical parts list are defective, replace the complete mounted board.
In this service manual, the block diagram and printed wiring board of the MOTHER board are described for reference.
Also, when the MOTHER board is replaced, be sure to refer to “DESTINATION SETTING METHOD” and “NFC OPERATION CHECKING METHOD”

NOTE OF REPLACING THE PARTY LED, SW LED NFC AND MS-476 BOARDS FOR REPAIRING
When the PARTY LED, SW LED, NFC and MS-476 boards are defective, replace the complete mounted board or the whole parts including the applicable board.
The mounted parts cannot be replaced with single for repairing..
Also, when the NFC board is replaced, be sure to refer to “NFC OPERATION CHECKING METHOD”

NOTE OF REPLACING THE SMPS BOARD FOR REPAIRING
When the SMPS board is defective, replace the complete mounted board.
The mounted parts cannot be replaced with single for repairing.
However, in this service manual, the block diagram, schematic diagram and printed wiring board of the SMPS board are described for reference.

TEST DISCS
Use following TEST DISC when this unit confirms the operation and checks it

 For CD
Part No. Description

3-702-101-01 4-225-203-01 J-2501-307-A

DISC (YEDS-18), TEST DISC (PATD-012), TEST DISC (HLX-A1), TEST

For DVD SL (Single Layer)
Part No. Description

J-6090-069-A J-6090-088-A J-2501-305-A J-6090-077-A

DISC (HLX-503), TEST (NTSC) DISC (HLX-504), TEST (NTSC) DISC (HLX-513), TEST (NTSC) DISC (HLX-506), TEST (PAL)

For DVD DL (Double Layer)
Part No. Description

J-6090-071-A J-6090-089-A J-2501-306-A J-6090-078-A

DISC (HLX-501), TEST (NTSC) DISC (HLX-505), TEST (NTSC) DISC (HLX-514), TEST (NTSC) DISC (HLX-507), TEST (PAL)

RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of sample disc in the shop is equipped.
It can release the lock function in the following procedure.

1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select the “DVD/CD” function.
3. Press two buttons of the [MEGA BASS] and [VOCAL FADER] simultaneously for 3 seconds.
4. The message “UNLOCKED” is displayed on the vacuum fluorescent display and the disc tray is unlocked.
Note: When “LOCKED” is displayed on the vacuum fluorescent display, the disc tray lock is not released by turning the power on/off with the [Power] button. 

HOW TO OPEN THE TRAY WHEN POWER SWITCH TURN OFF or no power

Note 1: Refer to “ DISASSEMBLY" , after the top panel block is removed, does this work.
Note 2: Please prepare the thin wire (clip etc. processed to the length of 8 cm or more).

Disassembly procedure

Panasonic TX 40DS500E – How to enter the service mode, LED blinking codes, SMPS circuit diagram {Schematic}, Disassembley, LCD panel check, Self check

 

Panasonic TX-40DS500E, TX-40DSU501 LED TV - KM29E Chassis

LCD screen: L5EDDYY00765 1920 x 1080, 16:9
Visible Diagonal 1000mm

Touch-Current Check.

1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such as a water pipe. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
3.  Check each exposed metallic part, and measure the voltage at each point.
4. Reserve the AC plug in the AC outlet and repeat each of the above measure.
5. The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values:
For AC.: U1 = 35 V (peak) and U2 = 0.35 V (peak); For DC: U1 = 1.0 V,
Note: The limit value of U2 = 0.35 V (peak) for AC and U1 = 1.0 V for DC,  correspond to the values 0.7 mA (peak) AC and 2.0 mA DC.
The limit value U1 = 35 V (peak) for AC  correspond to the value 70 mA (peak) AC  for frequencies greater than 100 kHz.
6. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned to the customer.

Chassis Board Layout.

Disassembly.

How to remove the pedestal assembly - How to remove the back cover.

SELF CHECK.

While pressing [VOLUME ( - )] button on the main unit, press the MENU button on the remote control for more than 3 seconds.
TV will be forced to the factory shipment setting after this SELF CHECK.

Setting Inspection - Voltage Confirmation.

Service Mode Function.
MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service. Menu. 

How to enter into Service Mode.
While pressing [VOLUME ( - )] button on the main unit, press the [RED] button on the remote control for 3 times within 2 seconds.
How to exit.
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.

Key Command
· Press the 3/4 button to change the adjustment values or function.
· Press the 1/2 button to step up/down through the functions and adjustments.
· Press the numerical button VOLUME (+/-) to change of each option item.
· Press the OK button after each adjustment has been made to store the required values.

Service Tool Mode.
How to access.
1. Select [SRV-TOOL] in Service Mode.
2. Press [OK] button on the remote control.

Display of SOS History.
SOS History (Number of LED blinking) indication.
From left side; Last SOS, before last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment.
This indication will be cleared by [Self/check indication and forced to factory shipment setting].
Power ON Time, On/Off.
Note: To display TIME/COUNT menu, highlight position, then press MUTE for 3sec.
Time: Cumulative power on time, indicated hour: minute by decimal.
On/Off: Number of On/Off switching by decimal.
Note: This indication will not be cleared by either of the self-checks or any other command.
Exit.
Disconnect the AC cord from wall outlet or switch off the power with [Power] button on the main unit.

Hotel Mode.
1. Purpose.
Restrict a function for hotels.
2. Access command to the Hotel mode setup menu.
In order to display the Hotel mode setup menu,
please enter the following command (within 2 second).
[TV] : Vol.[Down] + [REMOTE] : AV (3 times)
Then, the Hotel mode setup menu is displayed.

Data Copy by USB Memory.
Purpose.
a) Board replacement (Copy the data when exchanging A-board):
When exchanging A-board, the data in original A-board can be copied to USB Memory and then copy to new A-board.

b) Hotel (Copy the data when installing a number of units in hotel or any facility):
When installing a number of units in hotel or any facility, the data in master TV can be copied to USB Memory and the copy to other TVs.

Preparation.
Make pwd file as startup file for (a) or (b) in an empty USB Memory.
1. Insert an empty USB Memory to your PC.
2. Right-click a blank area in a USB. Memory window, point to New, and then click text document. A new file is created by default (New Text Document.txt).
3. Right-click the new text document that you just created and select rename, and then change the name and extension of the file to the following file name (a) or (b) and press ENTER.
File name:
(a) For Board replacement: boardreplace.pwd
(b) For Hotel: hotel.pwd
Note: Please make only one file to prevent the operation error. No any other file should be in USB Memory.

Data Copy from TV set to USB Memory.
1. Turn on the TV set.
2. Insert USB Memory with a startup file (pwd file) to USB Terminal.  On-screen display will be appear according to the startup file automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2770.
(b) For Hotel: 4850.
Data will be copied from TV set to USB Memory.
It takes around 1 to 2 minutes maximum for copying.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
5. Turn off the TV set.
Note: Following new folder will be created in USB Memory for data from TV set.
(a) For Board replacement: user_setup
(b) For Hotel: hotel.

Data Copy from USB Memory to TV set.
1. Turn on the TV set.
2. Insert USB Memory with Data to USB Terminal.
On-screen Display will be appear according to the Data folder automatically.
3. Input a following password for (a) or (b) by using remote control.
(a) For Board replacement: 2771.
(b) For Hotel: 4851.
Data will be copied from USB Memory to TV set.
4. After the completion of copying to USB Memory, remove USB Memory from TV set.
(a) For Board replacement: Data will be deleted after copying (Limited one copy).
(b) For Hotel: Data will not be deleted and can be used for other TVs.
5. Turn off the TV set.
Note:
1. Depending on the failure of boards, function of Data for board replacement does not work.
2. This function can be effective among the same model numbers.

Option Bytes Description

Self Check: How to access.
Self-check indication only.
While pressing [VOLUME ( - )] button on the main unit, press [BLUE] button on the remote control.
Self-check indication and forced to factory shipment setting.
While pressing [VOLUME ( - )] button on the main unit, press [MENU] button on the remote control for more than 3 seconds.
How to exit.
Switch off the power with the [POWER] button on the main unit.

[If the CCU ports have been checked and found to be incorrect or not located then " - - " will appear in place of "O.K.".]

Power LED blinking timing chart.
1. Subject: Information of LED Flashing timing chart.
2. Contents: When abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by number of blinking of the Power LED on the front panel of the unit.

LCD Panel Test Mode.
Purpose: To find the possible failure point where in LCD Panel or Printed Circuit Board when the abnormal picture is displayed.
How to Enter.
While pressing [VOLUME ( - )] button of the main unit, press [YELLOW] button of the remote control three times.
How to Exit. 
Switch off the power with the [POWER] button on the main unit or the [POWER] button on the remote control.
How to confirm.
If the abnormal picture is displayed, go into LCD Panel test mode to display the several test patterns.
And then, judge by the following method.
Still abnormal picture is displayed: The cause must be in LCD Panel.
Normal picture is displayed: The cause must be in A board.
Remarks:
The test pattern is created by the circuit in LCD Panel.
In LCD Panel test mode, this test pattern is displayed unaffected by signal processing for RF or input signal.
If the normal picture is displayed, LCD panel must be okay and the cause of failure must be in A board.

P-Board circuit diagram [schematic]