LG MCD23 User Manual

3-4
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
7. FLD DISPLAY PART CHECK
NO
YES
YES
YES
YES
Refer to SMPS.
NO
Replace P3302.
Check P3302 Connection.
Check if both end voltage of
F1,F2 are over 3.7V.
VKK : Over 28V
YES
FLD light on?
Check
P7904 PIN1,2,3
Voltage input
YES
Check P7302
Connection and
Power:pin29:FL+26,pin28:FL-22,
pin27:Vkk over 28V,
pin24:+5.6V
YES
Check
IC301(PT6324)Voltage
Pin50 VKK:-28V
PIN:9,52:+5V
YES
YES
Check each
PIN voltage.
IC100
Check IC301
Data communication.
Pin Pin
27pin 3pin STB
26pin 2pin data
28pin 1pin clk
FLD DISPLAY CHECK
OK
OK
OK
NO
Replace IC301.
NO
Replace IC100.
NO
NO
IF voltage is not 5V.
Check input and output of D301.
IC100 : 27,26,28 PIN Check
DATA INPUT.
26PIN DATA OUT
Check DATA INPUT.
YES
YES
YES
Check IC301.
YES
Check IC100.
OK
YES

LG MCD23 Specifications

General

Brand	LG
Model	MCD23
Category	Stereo System
Language	English