Sony MDS-JA20ES Service Manual page 6

HOW TO OPEN THE DISC TRAY WHEN POWER SWITCH TURNS OFF
1 Remove the fourteen screws (3 × 8) from the bottom plate (refer to page 87).
2 Remove the bottom plate.
3 Rotate the pulley gear in the arrow direction A, and open the tray assembly in the
arrow direction B.
pully gear
A
B
tray assembly
Forced Reset
The system microprocessor can be reset in the following procedure.
Use these procedure when the unit cannot be operated normally due to the overrunning of the microprocessor, etc.
Procedure :
Disconnect the power plug from the socket, and short-circuit the pin 1 and pin 3 of CN703 on the BT board with tweezers, etc. to
discharge the backup battery.
[BT Board] (Conductor Side)
CN703
1 3
BT701
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