Service manual

-50-
Chassis Block Diagrams
Q3601
D3621
D3622
SW901
LAMP
COVER
TEMP
LAMP
BALLAST
BOARD
K8N
K6M
K6L
FN903
FN904
FN905
1
2
1
2
1
2
D3623
D3626
K6K
K6J
FN901
FN902
1
2
1
2
3
8
67
2 12 1
IC7811
S15.5V
FAN_A
FAN_B
Q7812
TPFANA
Q7813
Q7811
3
8
67
IC7861
Q7862
Q7864
Q7861
Q7801
Q7844
P_FAIL
FAN_SW1
D3613
D3614
D3627
IC8821
TEMP.
SENSOR2
<LM76CH>
2 1
IC8811
TEMP.
SENSOR3
<LM76CH>
IC4831
TEMP.
SENSOR1
<LM76CH>
MAIN BOARD
FAN_CON_B FAN_CON_A
Power-On:H
IC3531
D/A
<M62334>
IC4891
NAND
2
FAN_CON_C
3
1
2
4
1
8
7
215
P_FAIL_FAN
370
269
Q7802
FAN_SW2
Power-On:H
363
212, 293
SCL0
SDA0
SCL0_5V
SDA0_5V
IC1371
BUS-SW
Power Error: On
P_Fail: H
SIGNAL/MODE
POWER-ON STAND-BY
H L
NORMAL ERROR
H L
FAN_SW1
FAN_SW2
P_FAIL
P_FAIL_FAN
P_FAIL
Q3601
Power Error: On
P_Fail: H
FAN_ERR
TPFANB
K8S
K8H
K8H
413
3
1
4
4
BALAST_AC
D3628
K8G
FN907
1
2
FAN_C
3
8
67
IC7841
Q7842
Q7841
D3644
TPFANC
2
1
IC301
SCALER
<PW190>
P_FAIL_FAN
Fan control circuit