Sunday, December 15, 2019

Sony STRDE245-how to enter the factory mode, adjustments, schematic


Sony FM Stereo FM-AM Receiver - STR-DE245/DE345STR-DE245/DE345
Australian Model – STRDE245 – STRDE345
SOFTWARE VERSION DISPLAY MODE
* The software version is displayed.STRDE245/STRDE345
US, Canadian and Chinese Models
STRDE345
* Procedure:
While depressing the TUNER and the VIDEO buttons simultaneously, press the power [Power] button to turn on the main power. The model name, destination and the software version are displayed.
FLUORESCENT INDICATOR TUBE TEST MODE
* All fluorescent segments are tested. When this test is activated, all segments turn on at the same time, then each segment turns on one after another.
* Procedure:
While depressing the TV/SAT and the CD buttons simultaneously, press the power [Power]  button to turn on the main power.
* All fluorescent segments are tested.
* Procedure:
While depressing the TV/SAT and the CD buttons simultaneously, press the power [Power] button to turn on the main power.
Press the VIDEO button, confirm display
BASS BOOST, MUTING, SET UP and NAME LED turn on.
Press the VIDEO button, confirm display [for the second time]
SOUND CONTROL LEVEL, SOUND CONTROL SUR and SOUND FIELD LED turn on.

Press the VIDEO button, confirm display. BASS BOOST, MUTING, SET UP and NAME LED turn on. Press the VIDEO button, All segments turn off. SOUND CONTROL LEVEL, SOUND CONTROL SUR and SOUND FIELD LED turn on.

Press the VIDEO button, All segments turn off. Every pressing of the VIDEO button turns on each segment one after another in the following order.(Not only the VIDEO button, but also the other buttons such asTV/SAT, MD/TAPE, CD, TUNER can be used.)

FACTORY SET MODE (Service Mode)
* All preset contents are reset to the default setting.
* Procedure:
While depressing the VIDEO and the CD buttons simultaneously, press the power [Power] button to turn on the main power. The message FACTORY appears and the present contents are reset to the default values.
ALL CLEAR MODE
* All preset contents are cleared when this mode is activated. Use this mode before returning the product to clients upon completion of repair.
* Procedure:
While depressing the TUNER and the MD/TAPE buttons simultaneously, press the power [Power] button to turn on the main power. The message INITIAL appears and initialization is performed.
SURROUND CLEAR MODE
* The preset sound field is cleared when this mode is activated.
Use this mode before returning the product to clients upon completion of repair.
* Procedure:
While depressing the SOUND FIELD ON/OFF button, press the power [Power] button to turn on the main power. The message SURR CLR appears and initialization is performed.
 
AM CHANNEL STEP 9 kHz/10 kHz
SELECTION MODE
* Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
* Procedure:
Set the FUNCTION to AM. Turn off the main power.
While depressing the TUNING+ button or the PRESET+ button, press the power [Power] button to turn on the main power. Either the message AM 9 k STEP or AM 10 k STEP appears. Select the desired step.
* For US/Canadian/E model only
KEY CHECK MODE
* Button check
* Procedure:
While depressing the MD/TAPE and the CD buttons simultaneously, press the power [Power] button to turn on the main power.
“RES 36 KEY” appears.
Every pressing of any button other than [Power] and SPEAKERS counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “RES 00 KEY” appears.
When MASTER VOLUME is rotated in clockwise direction, “VOL MIN”, “VOL 1” to “VOL 30”, “VOL MAX” appears.
Main board
Schematic
Display board schematic

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