File name p39-46.pdfRepair flow chart 104S CM23 GSIII 39
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A. Power Supply Failure
1. Sympton :
check 7103 pin7 check 7103
no startup sound Ok
100V 2.5V
/6111
Turn power off
2. Sympton :
check the resistance for
hicup mode with check 7103
all output voltages+180, OK
startup sound or pin 3 normal ?
80,12,-12,+6,+5,+8 V
blinking LED
check 6172/6157/6158
6160/6161 short? No
OPP possibly active
check 3125,3116,3117,
3118,6110,6109
OK
replace 5110
7103 pin7
check 7156 pin3 check 7156 pin1
Ok No possibly active by
voltage dip
7153 pinC shorted
No
Ok
check
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