BDV-F7, HBD-F7 - Sony Audio Service Manual (repair manual). Page 8

NOTE  OF  REPLACING  THE  IC300  AND  IC302  ON  
THE  AMP  BOARD  AND  THE  COMPLETE  AMP  BOARD
When IC300 and IC302 on the AMP board and the complete AMP 
board are replaced, it is necessary to spread the compound (OIL 
COMPOUND (G777)) (Part No. J-2501-335-A ) between parts 
and heat sink.
Spread the compound referring to the fi gure below.

NOTE  WHEN  VOLTAGE  ON  THE  AMP  BOARD  IS  
MEASURED
Do the following work when you measure the voltage of the AMP 
board.

Procedure:
1.  Remove the FAN motor (M301, 302).
2.  Be short-circuited of SL192 on the AMP board.

Note: The set enters the state of protect when SL192 is not short-circuited.
 

  Moreover, the set enters the state of protecting when the motor is 

not detached with SL192 short-circuited.

3.  Measure the voltage of the AMP board.
4.  Remove solder on SL192 after the measurement ends.
5.  Assemble the FAN motor (M301, 302).

NOTE  OF  DISC  PLAYBACK  IN  DISASSEMBLED  STATE
Reproduce by setting up the BD drive without fail in the vertical 
direction (the same direction as the state of the set) when you re-
produce the disc with the set taken apart.
There is a possibility that the disc is not correctly reproduced when 
setting it up in a wrong direction (horizontal direction etc.).