-23-
IC801
52
Fan Fail Detect ( To IC1821 37 )
FAN FAIL
55
Sound AMP Fail Detect ( To IC071 17 )
P FAIL 2
56
Power Fail Detect
(SUB CPU)
Not used in this model.
P FAIL 3
54
Power Fail Detect
(Main)
P FAIL 1
D102
5VANA
D7082/3
2.5VGR
(SUB CPU)
Q831/2
(SUB CPU)
D601/2
2.5VFPGA
D603/4
78
Temperature Fail Detect ( To IC1821 38 )
TEM. FAIL
D301/2
3.3VPIX
D7080/1
3.3VYC
3.3VAD
2.5VPIX
D201/2
■
Power Fail Circuit
CPU (IC801) is programmed that the set goes to standby mode when there is circuit fail as
below.
1. AUDIO AMP FAIL(2) : Detected the fail of Audio AMP IC (IC071)
2. POWER FAIL (3)
: Detected the voltage fail in SUB CPU Unit
( Not used in this model.)
3. POWER FAIL (1)
: Detected the voltage fail in SUB CPU Unit (1 point) and Main Unit (6 points).
4. OTHERS
TEMPERATURE FAIL : Detected the temperature fail ( about 80 degree) by thermal sensor IC (IC1981). CPU
communicates to FAN & Sensor Control IC (IC1821) for detection.
FAN FAIL
: Detected the fan fail by the communication to FAN & Sensor Control IC (IC1821).
(The set does not go to standby mode in this fail. Display Only.)
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