Abnormal voltage (MAIN+3.3V line) detection circuit
Audio Amp (IC4501) failure detection circuit
[POWER Indicator three blinks]
[POWER Indicator four blinks]
[POWER Indicator six blinks]
Abnormal voltage (SUB+5V line) detection circuit
IC1104,
Q1106
IC1107
+5V
REG.
1
2
MAIN P.C.B.
SOUND SOS (H)
IC6004
(TV MICROCONTROLLER)
72
IC4501
(AUDIO POWER AMP)
SOUND SOS (L)
5
SOS: Abnormal temperature for Audio amp (IC4501)
Normal
SOS
SOS: 0V on SUB+5V line
MAIN P.C.B.
IC6004 (TV MICROCONTROLLER)
SUB+5V SENS
34
SUB+5V
+9V
Normal
SOS
DC-DC
CONVERTER
SOS: 0V on MAIN+3.3V line
MAIN P.C.B.
IC6004 (TV MICROCONTROLLER)
MAIN+3.3V SENS
57
MAIN+3.3V
+9V
Normal
SOS
Normal
SOS
Q4502
Communication error between Peaks (IC8001) and TV microcontroller (IC6004) detection circuit
[POWER Indicator seven blinks]
MAIN P.C.B.
PANEL SOS (L)
IC6004
(TV MICROCONTROLLER)
48
IC8001 (PEAKS)
PANEL SOS (L)
L6
PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
14