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

- 17 -
TROUBLESHOOTING
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)
Change the Tuner
Correct the circuit
RF
Power Error
Is the Set ON?
Is the input 
cable attached?
What is
the input signal 
mode?
Check Vout
Signal at pin 9.
Of Tuner
Check 33V 
And 5V at pin 
7,6 resp. of 
Tuner
Check Vout
Signal at C230
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
Check the
Condition of all 
Connectors, wafers,
I2C In  the
system.
YES
NO
NO
YES
PASS
FAIL
FAIL
PASS
PASS
FAIL
PASS
PASS
PASS
PASS
FAIL
FAIL
PASS
FAIL
FAIL
PASS
FAIL
- 18 -
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
AV1
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check CVBS
Signal at R103
of 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
Is the
Set ON?
Is the input 
cable attached?
What is 
the input signal
mode?
YES
NO
YES
PASS
FAIL
FAIL
PASS
PASS
PASS
PASS
PASS
FAIL
FAIL
FAIL
PASS
FAIL
FAIL
PASS
NO
- 19 -
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
AV2
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check CVBS
Signal at R105
of 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
Is the
Set ON?
Is the input cable
attached?
What is
the input signal 
mode?
YES
NO
NO
YES
PASS
FAIL
FAIL
PASS
PASS
FAIL
PASS
PASS
PASS
FAIL
PASS
FAIL
FAIL
PASS
FAIL
- 20 -
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
AV3
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Is the
Set ON?
Is the input cable
attached?
What is
the input signal 
mode?
Check CVBS
Signal at R144
of 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
YES
NO
NO
YES
PASS
FAIL
FAIL
PASS
PASS
FAIL
PASS
FAIL
FAIL
PASS
FAIL
FAIL
PASS
PASS
PASS
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