55
Refer to the previous page block diagram.
(Power off)
Disconnect LD1 and LD2
connectors. Short check between
pin8,9 of LD1 and GND,
pin1,5 of LD2 and GND.
NG
NG
Both OK
58V(*),
88V(*)
LD board
Connect LD1 and LD2
connectors. Power on.
Check if the voltage
of SRV-VLED1, VLED2 (pin 3 , 7
of LD2) before LED 1 blink?
ALL OK
NG
OK
32V(*)
P board
Panel Module
LD board
Troubleshooting for LED Blinking ( 1 time blink )
Shorted
OK
Short check between SRV-
VLED1, VLED2 and GND
Panel Module
Power on.
Check if the voltage
of SRV-VLED (pin 9 of LD1)
before LED 1 blink?
Ex. 43/49DS630** series
(*)VLED : The DC level is different by the LCD panel.
<A+P+LD/LDP> -2
