File name 25gs3-p68~p75(Repair).pdf68 107P2 CM 25 GSIII Repair Flow Chart
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A. Power Supply Failure
1. Symptom : check 7106
no startup sound check 7106 pin1 check 7106 check 7106
Ok Ok pin 8=2.4V Ok
LED light off 100V 2V pin4 output ?
3131=24kohm
NO NO NO Ok
check check check
replace 7106 6165/3113/ NO
1101/6102/ 3121/3122/1106
7105 3124/2121/3136 3114/7105
check
check
replace 7106 3128/6107
pin6>8V
/6115
Turn power off
2. Symptom :
check the resistance for
hicup mode with check 7106 check 7106
all output voltages+180, OK
startup sound or pin 6 < 13.5V pin 5 < 0.5V
80,13,-13,-6.1,+5,+8 V
blinking LED
check 6148~6159 short?
No No
OPP possibly active
check check 7103 OVP possibly active
No check 3115,3116,
7157/7155/7113/7154 open circuit check 6115
3117,3118,6116,3127
OK
OK
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