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SW904
Interlock sw.
SW902
Thermal sw.
F601
Fuse
11
3
1
4
7
1
1
2
1
2
4
7
3
3
5
53
1 3
1
3
1 2
Power
Oscillator
Circuit
15.5V
15.5V
6V
-6V
FN901FN902
FN903
FN904
FN905
FN906
BALAST_AC1
LAMP_SW1
LAMP_BST_SW1
LAMP_BST_SW1
P-FAILP-FAIL
5V_SW5V_SW
FAN DRIVE1FAN DRIVE1
Fan Control
IC681IC671
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
415
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
SDA
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
SW904
IC2881
IC4881
SW902
-36-
Troubleshooting
Power supply drive and protection diagrams and locations