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Troubleshooting
●
No Power
Check the power failure detection tree
IC4847
S9.6V
Q4863
S3.3V
S16V
IC4837
S6V
IC4845
5VB
IC1402
-5V
16VB
IC1456
16VA
IC4848
IC7801
DACFANSW1
IC7802
DACFANSW2
IC7831
DACFANSW3
IC7832
DACFANSW4
9V
5V
IC461
3.3V
S1.9V
S5V
5V_DAC
12V_DA
15.5V
15.5V_SW
DCFAN_1
DCFAN_2
ASS'Y LAMP FANNET
DCFAN_3
DCFAN_4
ASS'Y LAMP NET
UNIT_PFC3-4
ASS'Y EXH FANNET
ASS'Y MOTOR&AUDIO
ASS'Y BGA
ASS'Y MAIN
1.8VGS
Q7805
- 60 -
DETECTION
LINE NAME
D4827
PF_S9V
D4835
PF_9V
D4826
PF_3.3V
D464
PF_1.8VGS
D4828
PF_5V
Q4866
PF_-5V
D4833
PF_16V
D1451
PF_12VDA
D5801
PF_15.5V
PF_K8G
D7801
PF_VCCFAN1
Q7807
PF_FAN1
D7802
PF_VCCFAN2
Q7806
PF_FAN2
D7831
PF_VCCFAN3
Q7837
PF_FAN3
D7832
PF_VCCFAN4
Q7836
PF_FAN4
PF_PFC1
PF_PFC2
PF_PFCFAN1
PF_PFC3
PF_PFC4
PF_PFCFAN2
12VA
PF_TH
12V
PF_M&A
PF_BGA3.3V
FAILURE AREA
S9.6V line on Main
9V line on Main
(Audio)
3.3V line on Main
(I/P, Gamma)
1.8V line on Main
(Gamma)
2.5V line on Main
(SW_FPGA)
5V line on Main
-5V line on Main
16V line on Main
12VA line on Main
15.5V line on Main
(PANEL)
Connector K8G
Fan_1 DC line
Fan lock_1
Fan_2 DC line
Fan lock_2
Fan_3 DC line
Fan lock_3
Fan_4 DC line
Fan lock_4
PFC_1
PFC_2
Fan lock on PFC1-2
PFC_3
PFC_4
Fan lock on PFC3-4
Lamp cover SW
Thermal SW
Motor & Audio
3.3V on BGA
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