Power Supply And Power Fail Detection - Sanyo PLC-XF70 Service Manual

Troubleshooting

Power Supply and Power Fail Detection

S3.3V
IC1306
S1.8V_PW
IC1307
S2.6V_PW
L5892
IC5891
L5893
L5866
IC5865
L5867
L5868
L5869
L5861
S3.3V_NIOS
L5801
S3.3V_IO
IC1841
S1.9V
Q5630
3.3V
16V_M
D4781
PF_3.3V
S9.6V
PF_S9V
D4782
S6V
IC4861
S5V
D4788
-5V
PF_-5V
Q5841
-5VA
L202
FAN12V
36
PF_VCCFAN1
37
PF_3.3V
38
PF_-5V
39
PF_2.5VGAM
40
PF_3.3VGAM
42
PF_MOTOR
Q4864 Q4865
43
PF_1.2VPIC
91
PF_TH
92
PF_12VA
93
PF_16V_M
94
PF_15.5VGAM
95
PF_S16V
Q4857 Q4858
97
PF_1.8VAD
Q4862 Q4863
98
PF_PLLPIC
135
PF_FAN1
144
PF_3.3VAD
176
PF_K8G
177
PF_PFC4
179
PF_5V
Q4853 Q4854
180
PF_PLLFST
204
PF_FAN2
208
PF_PFC3
233
PF_S9V
Q4851 Q4852
234
PF_1.2VFST
Q4855 Q4856
235
PF_1.8VGAM
247
PF_VCCFAN2
5VB
IC2291
D4784 D4785 D4786
S1.2V_IO
PF_5V
S1.2V_NIOS
D4783
S1.2V_IO_A
16V_M
S1.2V_IO_D
PF_16V_M
S1.2V_NIOS_A
D4789
S1.2V_NIOS_D
S16V
IC5502
PF_S16V
D4787
L5241 L5252
IC5241
3.3V_FRT
R5216
L5253
IC5242
L5254
D1451
PF_2.5VGAM
L1454
IC1451
2.5V_DI
SW_2.5VGAM
R1429
PF_1.8VGAM
L1455
IC1441
1.8V_DI
L1456
1.8V_DDA
SW_1.8VGAM
D1452
PF_3.3VGAM
L1451
Q1451
3.3V_DI
L1452
3.3V_DDA
R6257
SW_3.3VGAM
L6295
Q6291 IC6292
3.3V_PIC
L6296
R6256
IC6291
1.2V_PIC
112
SW_1.8VGAM
170
SW_2.5VGAM
IC5801
Q4868 Q4869
228
FPGA<I/O>
SW_3.3VGAM
<EP2C5F256C8N>
IC801
A[0-15]
SH3
D[0-15]
<HD6417727>
5VA
D2551
L201
5VC
L2251
IC2251
5V
L2252
L2253
R583
IC591
15.5V
D591
ON_15V PF_15.5VGAM
IC5651
12VA
PF_12VA
D5630
S12V
1.2V_FRT
R5215
PF_1.2VFRT
PF_PLLFST
1.2V_FRT_A
1.2V_FRT_D
K8A K90Q
7~9
IC9101
S6V S6.35 3.3VFPGA
23,24
-5V
-6VB
27~32
5VB 6VB
35~38,40
IC9097
S9.6V S9.6V
SLOT_2_ON
K90C
K80H
38,82 41,85 39,83,
128,172
PF_PLLPIC
S9V S9V_AV 9V_AV
1.2V_PICA
1.2V_PICD
PF_1.2VPIC
IC9931
IC8172
S5V
5VDVI
IC8191
3.3V
R9988
L3104
F5V_AV
IC4131
IC4151
4
PF_3.3V_D
IC9912
5
PF_1.8V_D I/O
EXPANDER
6
PF_3.3V_A
<M62320>
7
PF_1.8V_A
111
ON_15V
186
IC_RESET_CPU
- 127 -
-17-
R2250
PF_3.3VAD PF_1.8VAD
L2254
IC2252
3.3V_AD A1.8V_AD
L2255
A3.3V_AD D1.8V_AD
D3.3V_AD
VVDD
R586
HVDD
12V
PF_TH
D4779
SW902,
SW903,
SW904
IC9162
2.6VBFPGA
IC9163
1.2VFPGA
IC9102
6VB
SLOT_2_ON
IC9101
-6VB
126,170 129,173 125,169 40,84
-5V -5V_AV 5V 5V_AV
R9989
PF_9V PF_5V
Q9954
P_FAIL
IC9942
F5V_AV
D8175
L8132
IC8131
S5V_AV
PF_2.5VDVI
5VDDC
D8191
D8192
L8011
VDD3_DVI
PF_F5V
5V_DA_AV
L4172
3.3V_D_AV 3.3V_DVPL_AV
3.3V_A_AV
10 IC8183
Q8171
11
PF_3.3VFPGA
I/O
11
EXPANDER
PF_9V
<M62320>
12
PF_F5V
IC9983
PF_5V
K8E
K65A
PF_MOTOR PF_MOTOR
14
29
S16V S16V
~
34
D6506/D5533/D5553/D6553
K8D K66D
23
MAIN
CGMOTHER
IC9131
118
I/O
EXPANDER
<XC3S50>
AV/DVI
VDD2.5_DVI
Q8172
PF_2.5VDVI
MOTOR
POWER
(DC)
IC_RESET_CPU