Sony MHC-V41D, Руководство по обслуживанию

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MHC-V41D
41
3. MOTHER Board Mount Diagnosis Flow (Except Ampli fi er)
CN001:
pin 1, (13V/+16V)
pin 3, 4 (M/D_+13V/+16V)
Standby Demo mode Power on
17.4 V ± 5 % 17.4 V ± 5 % 17.4 V ± 5 %
IC001
5 V
Pin name Voltage IC Pin number Test point
SW1 3 JL069
PGND1 4
5.2 V
SW2 14 JL070
PGND2 13
IC009
1.2 V
SW1 3 JL072
PGND1 4
3.3 V
SW2 14 JL071
PGND2 13
IC008 12 V
VOUT 2 JL073
GND 3
IC004 9 V
VOUT 2 JL047
GND 3
IC006 5 V
VOUT 2 JL048
GND 3
IC002 12 V
OUT 1 JL137
GND 3
IC1000 5 V
VOUT 4 JL1003
GND 2
IC305 3.3 V
VOUT 3 CL395
GND 2
Connect the power supply cord.
The voltage of the following is outputted.
No
Check the connection of connector
(CN001). When there is not problem to
the connection, check the SMPS board.
Yes
The voltage of the following is outputted between the each terminal of IC.
No
When there is problem, replace the
problematic IC.
Yes
End