LG 710E Service Manual



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Proper Video levels are
on P301 Pin 1, 3 and 5.
IC401 Pins 27 and 28 inputs are  right at each function?
21. User Control Failure
Check connector Ass’y.
NO
Done.
Check and replace IC401.
Check and replace function key.
YES
22. Missing Color
NO
Change the CRT.
Check signal generator and
signal cable.
NORefer to 2 No Charcter.
NOCheck and replace IC303
NOCheck C341, C346 and G2 wire.
Check around FBT circuits also.
YES
YES
YES
YES
- 32 -
Proper AC voltage are on all cathodes?
Proper DC voltage are
on all...

Blank pedestal is on 
Pin 19, 20 and 21 of IC302
Is V_FLB and DC_bias on
G1 Pin at CRT socket?
G2 voltage is right?
23. Visible Retrace
Check white balance adjustment.
NO
NO
NO
Done.
Check G2 control volume and FBT.
Check IC302
and related components.
Check Q799 
and related components.
YES
YES
YES
- 33 -
Degaussing circuit is right?
Purity is right?
24. Purity Failure
Degaussing
YES
NO
Replace CRT and verify purity.
Done.
Refer to 6 NO Degaussing.
NO
YES 

Improved focus?
Adjust Pole4,Pole6
to improve the misconvergence
25. Misconvergence
Degauss the CDT
Done.
Change CRT and readjust
convergence.
YesDone
No
26. Poor Focus
Adjust focus VR.
Check focus leads from
FBT to CRT Socket.
Check the CRT Socket.
YESAging monitor and
check for focus change.
NORefer to 18 Dynamic
Focus Failure.
NO
Replace the CRT and verify focus.
YES
- 34 -
Dynamic focus circuit is
right? 

EXPLODED VIEW(710BM)
-35 -
10
12
12
13
11-2
11-1
14
14
4
3
8
B
A
2
6
7
5
a
d
c
b
b
9
1
M
EN U
S
ELECT
15
e 

%80,/$%$6)%70!243,)34M	

36 
DESCRIPTION
710BL DI VERSION BRAND C083 MPR2,DI for Australia,Southeast Asia,Europe,\
Indonesia,South Africa
710BL DI VERSION BRAND C083  Non-MPR2,DI for Southeast Asia,Europe,Israe\
l,Asia,United Kingdom,Vietnam,South Africa
710BL DI VERSION BRAND C083  Non-MPR2 BK,DI for Southeast Asia,Europe,Is\
rael,Asia
710BL DI VERSION BRAND C083  MPR2 BK,DI for Europe,Singapore,South Afric\
a
710BL DI VERSION BRAND C083  TCO99,DI for Europe
710BL DI VERSION BRAND C083  Silver...

REPLACEMENT PARTS LIST 
 
 
 
 
CAUTION : BEFORE REPLACING ANY OF THESE COMPONENTS, READ CAREFULLY THESAFETY PRECAUTIONS IN THIS MANUAL. 
* NOTE    : S    SAFETY Mark  !  
AL   ALTERNATIVE PARTS
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
DATE: 2005-8-18 
C419 0CQ2221N419 2200PF D 100V 5% PE NI TP5 
C420 0CQ6831N509 0.068UF D 100V 10% PE TP5 
C421 0CK1020K515 1000PF D 50V 10% B(Y5P) TR C422 0CK2220K515 2200PF D 50V 10% B(Y5P) TR 
C423 0CK2220K515 2200PF D 50V 10% B(Y5P) TR...

 
 
 
 
 
 
 
 
 
 
 
 
C902 0CBZTBU002C BULK PCX2 335 104M C903 0CKZTBU003D SC SAMWHA 250V 1000PF M BULK
     7.5 Y2 E 
C904 0CKZTBU003A SC E 222M 10.0BW7 250V BK7.5      SAMWHA Y2 
C905 0CKZTBU003A SC E 222M 10.0BW7 250V BK7.5 
     SAMWHA Y2 C906 0CKZTBU003D SC SAMWHA 250V 1000PF M BULK
     7.5 Y2 E 
C907 0CKZTBU003C SC E 472M 14.0BW7 250V BK7.5      SAMWHA Y2 
C908 0CEZTBU002D 180UF 25.4*35 SMH/HC 400V M 
     VNSN BULK C909 0CK10301945 10000PF D 1KV 80%,-20% F(Y5V) 
     TR 
C910 0CKZTTA002A 220PF...

 
 
 
 
D951 0DRGF00150A UF5404 GULF BK DO201AD 400V 
     3.0A 150A 50NSSEC 10.0UA 
D952 0DSGF00019A 1N4148 GULF TP DO35 100V 0.15A     2A 4NSSEC 25UA 
D961 0DRGS00090A 31GF6L-5701 GENERAL  
     SEMICONDUCTOR BK NON 600V      3A 60A 30NSEC 20UA 
D971 0DD400709CC UF4007-1021 TIWAN SEMI TP 
     DO204AL 1000V 1A 30A 75NSEC      10UA 
ZD301 0DZPT43009A UZ-4.3BSB PCTRONIX TP52 DO34 
     500MW 4.3BV 5MA PF ZD402 0DZ560009AG GDZJ5.6B TP GRANDE DO-34 
     500MW 5.6V 5MA 
ZD403 0DZ560009AG GDZJ5.6B TP GRANDE...

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
R203 0RD2200Q609 220 OHM 1/4 W(3.4) 5.00% TA52 
R204 0RD4300Q609 430 OHM 1/4 W(3.4) 5.00% TA52 
R207 0RD7500Q609 750 OHM 1/4 W (3.4) 5% TA52 R209 0RD9100Q609 910 1/4W(3 5% TA52 
R301 0RD0752Q609 75 1/4W(3 5% TA52 
R302 0RD0752Q609 75 1/4W(3 5% TA52 R303 0RD0752Q609 75 1/4W(3 5% TA52 
R305 0RN6201F409 6.2K OHM 1/6 W 1.00% TA52 
R314 0RD1000Q609 100 1/4W(3 5% TA52 R315 0RD1000Q609 100 1/4W(3 5% TA52 
R319 0RD4701Q609 4.70K...