DOWNLOAD LG 37LC2DB (CHASSIS:LD61A) Service Manual ↓ Size: 8.29 MB | Pages: 61 in PDF or view online for FREE

Model
37LC2DB (CHASSIS:LD61A)
Pages
61
Size
8.29 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
37lc2db-chassis-ld61a.pdf
Date
PREV: LG 37LC2D (CHASSIS:LB61A) Service Manual

LG 37LC2DB (CHASSIS:LD61A) Service Manual ▷ View online

- 21 -
No image
Push the POWER 
ON key
Check for S/W error
Replace Cortez
Replace Hudson
Power Error
Replace CXA2069
Correct the circuit
Attach the input 
cable(s)
Replace Jack Board
S-Video
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check Y/C
Signal at L131,132 on
Jack board
Check 3.3V 
At L110 on jack
board
Check Sub_YC
At R302,303
Check Main_YC
At R309,320
Check 24bit
RGB at AR700-
AR705
Check LVDS
Output of Cortez
Check Power 
Levels and crystal
Check Q303 
Circuit and 9V
at L300
Is the input cable
attached?
Is the
Set ON?
What is
the input signal 
mode?
YES
NO
NO
YES
PASS
FAIL
FAIL
PASS
PASS
FAIL
FAIL
PASS
FAIL
PASS
FAIL
PASS
PASS
PASS
FAIL
- 22 -
No image
Push the POWER
ON key
Check for S/W error
Replace Cortez
Replace Hudson
Power Error
Replace CXA2069
Correct the circuit
Attach the input
cable(s)
Replace Jack Board
AV4
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check CVBS
Signal at R169
on jack board
Check 3.3V 
At L110 on jack
board
Check Sub_V
At R302
Check Main_V
At R309
Check 24bit
RGB at AR700-
AR705
Check LVDS
Output of Cortez
Check Power 
Levels and crystal
Check Q303 
Circuit and 9V
at L300
What is
the input signal 
mode?
Is the input cable
attached?
Is the
Set ON?
YES
NO
NO
YES
PASS
FAIL
PASS
FAIL
PASS
PASS
PASS
PASS
FAIL
FAIL
PASS
FAIL
PASS
FAIL
FAIL
- 23 -
No image
Push the POWER
ON key
Check for S/W error
Replace Cortez
Replace Hudson
Power Error
Replace IC505
Replace STi5100
Power Error
Attach the input
cable(s)
Replace Tuner
DTV
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check 8bit
Signal at digital
Tuner at 
R318-326.
Check 5V 
At L305,310
Check 8bit
Signal at AR110-
AR111
Check 8bit
Signal at AR 500-
AR501
Check 24bit
RGB at AR700-
AR705
Check LVDS
Output of Cortez
Check Power 
Levels and crystal
Check power 
Levels for 
STi5100
Is the
Set ON
Is the input 
cable attached?
What is
the input signal 
mode?
YES
NO
NO
YES
PASS
FAIL
PASS
FAIL
PASS
FAIL
PASS
FAIL
FAIL
FAIL
FAIL
PASS
PASS
PASS
PASS
FAIL
PASS
- 24 -
No image
Push the POWER
ON key
Check for S/W error
Replace Cortez
Replace Hudson
Power Error
Replace IC301
Power Error
Attach the input 
cable(s)
Replace Jack Board
Component
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check Y,Pb,Pr 
At L129,128,130
respectively
Check 3.3V 
At L110 on jack
board
Check Sync_DE
Signal at R370
Check 24bit
RGB at AR700-
AR705
Check LVDS
Output of Cortez
Check Power 
Levels and crystal
Check 5V 
At L303 on jack
board
Is the
Set ON?
Is the input cable
attached?
What is
the input signal 
mode?
YES
NO
NO
YES
PASS
FAIL
FAIL
PASS
FAIL
FAIL
FAIL
PASS
FAIL
PASS
PASS
PASS
PASS
PASS
FAIL
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