Panasonic PT-56LCX70 Service Manual page 23

[POWER Indicator nine blinks]
Communication error between Peaks (IC8001) and TV microcontroller (IC6004) detection circuit
IC6004
(TV MICROCONTROLLER)
PANEL STATUS (SOS (L))
[POWER Indicator ten blinks]
Abnormal voltage (LCD+17V line) detection circuit
IC6004 (TV MICROCONTROLLER)
LCD+17V SENS
[LAMP Indicator two blinks]
Lamp does not light up detection circuit
[LAMP Indicator three blinks]
Lamp failure detection circuit
[LAMP Indicator four blinks]
Abnormal Lamp temperature detection circuit
[LAMP Indicator five blinks]
Lamp communication error detection circuit
[LAMP Indicator thirteen blinks]
Abnormal Lamp input voltage (+28V) detection circuit
IC6004 (TV MICROCONTROLLER)
LAMP ON (H)
LAMP TXD
LAMP RXD
+12V
F801
RL802
8A/125V
AC LINE
AC IN
FILTER
POWER P.C.B.
Normal
SOS
13
MAIN P.C.B.
LCD+17 V
Normal
SOS
10
SOS: 0V on LCD+17V line
MAIN P.C.B.
Q6008
88
Q6017
66
67
SOS Information
SUB+5 V
MAIN P.C.B.
Q806
TV SUB ON (H)
1
AC LINE
FILTER
2
PT-56LCX70 / PT-61LCX70 / PT-50LCX7 / PT-56LCX7 / PT-61LCX7
9 9
Q6005
2
1
Q6018
7
3
AC IN +28V
AC IN GND
RF AMP POWER
SUPPLY P.C.B.
23
IC8001 (PEAKS)
PANEL STATUS (SOS (L))
G1
+17V
POWER P.C.B.
LAMP ON (H)
LAMP TXD
LAMP RXD
SUB+5V
TEMPERATURE
SENSOR
+28V
GND
LAMP UNIT