MDS-JA555ES - Sony Audio Service Manual (repair manual). Page 6

6

1

 Remove the 16 screws (BVTT3 x 8) from the bottom plate. (Refer to Section 3 “Disassembly” Loading panel.) (page 14)

2

 Remove the bottom plate.

3

 Rotate the pully gear in the direction of the arrow A and open the tray in the direction of the arrow B.

4

 When checking the laser power, remove beforehand the loading panel by removing the two screws (M2.6) and sliding aside the loading

panel becouse the cable of the laser power meter can be pinched by the loading panel. (Refer to Section 3 “Disassembly” Loading
panel.) (page 14)

Use this function when the MDS-JA555ES cannot be operated normally due to hung-up of the microprocessor.
It is recommended to use this function when you cannot exit the test mode or the retry-cause-display mode, or when the normal operation
cannot be performed after the MDS-JA555ES is disassembled once then re-assembled.

Procedure : Remove the AC power plug from the wall outlet.  Short-circuit pin-1 and pin-3 of CN703 on the BT board with a pair of

tweezers or the like, to discharge the back-up battery.

A

B

Pulley gear 

Tray assembly

Two screws 
     (M2.6)

Remove the Loading panel

[BT board] (Conductor side)

CN703

JW790

JW791

1

3

BT701