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Part 4: Troubleshooting
4-3
SW904
Interlock sw.
SW902
Thermal sw.
F601
Fuse
1
1
3
1
4
7
1
1
2
1
2
4
7
3
3
5
5
3
1
3
1
3
1
2
Power
Oscillator
Circuit
15.5V
15.5V
6V
-6V
FN901
FN902
FN903
FN904
FN905
FN906
BALAST_AC1
LAMP_SW1
LAMP_BST_SW1
LAMP_BST_SW1
P-FAIL
P-FAIL
5V_SW
5V_SW
FAN DRIVE1
FAN DRIVE1
Fan Control
IC681
IC671
IC801
SUB CPU
IC1881
BUFFER
IC1871
BUFFER
IC2881
TEMP.SENSOR
IC4881
TEMP. SENS.
TEMP. SENSOR
BOARD
9-10
13-14
15-16
11-12
1
2
1
2
47 80 81
48
82
3
39
1
41
5
3
9
12
18
2
8
11
17
15
Q661
37-38
P.F BOARD
POWER BOARD
MAIN BOARD
LAMP BALLAST UNIT
AC IN
K6D
K6E
K6F
K6J
K6K
K6M
K6L
K6S K8S
K6S K8S
K8B
K8E
K48E
K8N
K8P
CB1
CB2
LAMP Ass'y
LAMP_ERR
SD
A
SCL
IC611
P.F.CONTROL
TSW611
LAMP
On: High
On: High
Failure: Low
Failure: Low
Failure: High
On: High
On: High
On: Low
On: High
On: High
F601
SW902
SW904
IC2881
IC4881
Fig. 4-1 Power supply drive and protection diagrams and locations
Summary of Contents for LV-7355J
Page 9: ...Part 1 General Information ...
Page 22: ...Part 2 Repair Information ...
Page 43: ...Part 3 Adjustment ...
Page 65: ...Part 4 Troubleshooting ...
Page 82: ...Part 4 Troubleshooting 4 17 BA7078AF Selector IC6241 CXA2101AQ RGB Matrix IC4101 ...
Page 85: ...Part 4 Troubleshooting 4 20 ML60851 USB I F IC9801 M62393 D A IC2571 ...
Page 86: ...Part 4 Troubleshooting 4 21 TB1274AF Video Decoder IC1101 TA1318N AFC Detector IC6171 ...
Page 88: ...Part 5 Parts Catalog ...
Page 89: ......
Page 107: ...Part 6 Electrical Diagrams ...
Page 117: ......