HT-GT1 - Sony Audio Service Manual (repair manual). Page 5

ADVANCE  PREPARATION  WHEN  CONFIRMING  OP-
ERATION
All of the units included in the HT-GT1 (SA-WGT1/SS-GT1) are 
required to confi rming operation of SA-WGT1. Check in advance 
that you have all of the units.

NOTE  OF  PERFORMING  THE  OPERATION  CHECK  IN  
THE  STATE  THAT  HEAT  SINK  WAS  REMOVED
When performing the operation check in the state that this unit was 
disassembled, it is possible to perform the operation check in the 
state that heat sink was removed. But don’t perform the operation 
check in the long time, and perform the operation check in the 
volume state as low as possible.

NOTE  OF  REPLACING  THE  TUNER  BOARD
When the TUNER board is defective, replace the complete mount-
ed board.

NOTE  OF  REPLACING  THE  IC1002  AND  IC4001  ON  
THE  MAIN  BOARD
IC1002 and IC4001 on the MAIN board cannot replace with sin-
gle. When these parts are damaged, replace the complete mounted 
board.

NOTE  OF  REPLACING  THE  IC002  ON  THE  MAIN  
BOARD  AND  THE  COMPLETE  MAIN  BOARD
When IC002 on the MAIN board and the complete MAIN board 
are replaced, it is necessary to spread the compound between the 
MAIN board and the heat sink.
Spread the compound (THERMAL COMPOUND (G747)) refer-
ring to the fi gure below.