Sony HT-ST5000 Service Manual page 68

HT-ST5000
3. The sound is not outputted
The sound is not outputted.
Yes
The voltage of the following is 3.3 V.
AMP board: IC6006 and IC7006
pin 9 (AVDD), pin 14 (DVDD2),
pin 35 (DVDD1)
No
The voltage of the following is 3.5 V.
AMP board:
IC6009 and IC7009 pin 1
No
The voltage of the following is 12 V.
AMP board: IC7003 pin 4
No
Check and repair the area
surrounding between IC7002 and
IC7003 on the AMP board.
Vibrators (X6001, X7001) on the
AMP board are oscillated.
(IC6006 and IC7006 pin 11, pin 12
are no abnormality)
No
Check and repair the area
surrounding X6001 and X7001 on
the AMP board.
The PWM signal (pin 42 to 49 and
pin 53 to 56) is outputted of IC6006
and IC7006 on the AMP board.
No
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68
Yes
Yes
The voltage of the following is 3.3 V.
AMP board: IC6009 and IC7009 pin 3
No
The PCONT1 (pin 15) signal is outputted
of IC3002 on the MB-1611 board.
No
Replace the MB-1611 board.
Check the area surrounding between
IC7003 and IC6009/IC7009 on the AMP
Yes
board.
If there is no abnormality, replace the
IC7003 on the AMP board.
The RESET (pin 16), PDN (pin 18), MUTE
Yes
(pin 19), SDA (pin 20) and SCL (pin 21)
signals are inputted correctly of IC6006
and IC7006 on the AMP board.
No
The RESET (pin 148), PDN (pin 152),
MUTE (pin 153), SDA (pin 146) and SCL
(pin 147) signals are outputted correctly
of IC3002 on the MB-1611 board.
No
Replace the MB-1611 board.
Check and repair the area surrounding between
Yes
IC6006 and IC6004/IC6005/IC6007 on the AMP board.
Check and repair the area surrounding between
IC7006 and IC7004/IC7005/IC7007 on the AMP board.
Check the area surrounding IC6009
and IC7009 on the AMP board.
Yes
If there is no abnormality, replace
the IC6009 and IC7009 on the AMP
board.
Check the connection between the
Yes
MB-1611 board (CN701) and the
AMP board (CN7007).
Yes
Check the connection between the
Yes
MB-1611 board (CN701) and the
AMP board (CN7007).