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CIMA I TRAINING MANUAL
MC-059A (CIMA) CHASSIS (14"~21" Conventional/FLAT)
North-America Korea Japan Middle-America Philippines
South-America
Page 73 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : BLOCK DIAGRAMS
DVD R/L
Page 74 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : MONO MODELS
P901 CPT
FR932 R923
R912
R917
L901 9V B G R
R520 R527
9 8 7 6 5
R920 R919 R918 Q902 Anode HV R916 R906 R905 R921 R922 Focus Screen Q901
L902 L904 L903
C527 ZD505 L216
MONO MODELS VIDEO SIGNAL FLOW (WITHOUT IC751)
Explanation
1. IF signal from TU101 flow through to pin 63, 64 of IC501. The video detection circuit in IC501 will be detect the video signal from IF signal and then send it out by pin 60. The video out from pin 60 will be return to IC501 again by pin 56 and we're can call this signal is "Internal Video" 2. External video is the signal from external equipment, such as VCD, or VCR. Rear A/V (JA01) and front A/V (JA02) is same line circuit but, JA02 has the internal automatic switch on/off. When you put the A/V pluck to JA02 and JA01 in same time. The IC501 will be receive the signal and flow through to pin 54 from JA02 only. 3. Internal signal and External signal will be joint together at Video switch circuit in IC501. When the user select the input signal (by press TV/AV button on the remote control or submenu on the set) and then the video switch circuit will be select the signal follow the user selected. The signal after selected will be send to video processing circuit and pin52 (video out for JA01) 4. After video processing circuit complete process, the signal R, G, B will be send out from pin 12, 13, 14 of IC501 to video amp circuit before sent to CPT.
R915 R908 D902 D901
Heater
4 3 2
JA02 FRONT AV
C902 SK901
C904
C907
R902 180V C901
1
C229
R226
C726
L225 Q241 C246 R530 R531 54321 C523 Z111 R561
J534
J704
R711
C231
< OPTION > R101
9V
C101
R249
64
63
62
61
60
59
58
57
56
55
54
9V
R247
53
52
51
50
J222
49
48
47
46
45
40
39
38
37
36
35
34 I2C DATA 31
VIDEO OUT
EXT VIDEO
IF IN
IF IN
GND
RF AGC
SVO/FSC
CR
CB
L102
R105
INT VIDEO
DVD-Y
SW1
C111 C105
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Q101 R103 R104
SW2
C104 R100 IF
*
10
11
12
13
14
15
16
17
18
19
20
25
26
27
28
29
30
R21 V OUT L OUT SDA C131 SCL C130 R514 C50 R516 C51
R23
ST-5V
P902-1 R507 R506 B G R505 R 5 4 3 2 1 9V
V IN
TU101
JA01 REAR AV
L IN
P902-1
32
1
2
3
4
5
6
7
8
9
I C CLOCK
R102
C115
-
IC501
R OUT G OUT B OUT -
LA76931
-
2
-
33
Page 75 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : MONO MODELS &DEFLECTION
MONO MODELS AUDIO SIGNAL FLOW (WITHOUT IC751)
JA02 FRONT AV
L217 Z111 54321 C231 C233 J720
61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 40 39 38 37 36 35 34 33
L218 C235
R706 C234 C677
J705
Explanation
1. IF signal from TU101 flow through to pin 63, 64 of IC501. The Sound detection circuit in IC501 will be detect the SIF signal from IF signal and then send it out by pin 1. The SIF from pin 1 will be return to IC501 again by pin 3. The sound detection circuit (2 nd) will be detect the audio signal from SIF and send it out to sound switch circuit and for the JA01 by pin 5 of IC501. 2. External audio is the signal from external equipment, such as VCD, or VCR. Rear A/V (JA01) and front A/V (JA02) is same line circuit but, JA02 has the internal automatic switch on/off. When you put the A/V pluck to JA02 and JA01 in same time. The IC501 will be receive the signal and flow through to pin 54 from JA02 only. 3. Internal signal and External signal will be joint together at sound switch circuit in IC501. When the user select the input signal and then the sound switch circuit will be select the signal follow the user selected. The signal after selected will be send to pin 6 for the audio power amplify circuit before send the to speaker.
64
63 IF IN
IF IN
GND
62
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
9V
EXT. AUDIO IN
AUDIO OUT
< OPTION > R101
10
11
12
13
14
15
16
17
18
19
20
25
26
27
28
29
30
31
L102
C501
C503
R105
C111 C105 ZD506 R517 R511
J109
C543
C522
R503
R528
R102 C104 R100 IF Q101 R103 R104
C115 R501 L501
IN
1
2
3
4
5
6
7
8
9
R611
C604
*
Q501 R533
9V
C603
L221 C215
R708
SDA C131 SCL C130
R516 C51
L OUT
JA01 REAR AV
ST-5V R21 R23
R514 C50
L IN
IC601 LA42071
32
1
2
3
4
5
6
7
8
9
I2C CLOCK
I2C DATA
IC501
-
LA76931
-
SIF OUT
FM OUT
SIF IN
-
-
-
-
J539
C101
-
IC301 LA78040
THERMAL PROTECTION
TU101
Explanation
1. The H drive output is open collector and active low, I.e. the H-out TR should conduct during the low period of output. 2. Under normal operation condition the duty cycle of the output pulse is 50%. 3. To ensure a smooth start/stop behavior of the horizontal deflection and protect the H-out TR, there are 3 different condition of H-drive output. During switch-on.The horizontal output starts with
B+ 110V
41 42 43 44 24 23 22 21
the double frequency(31KHz) and with duty of 75%(off),25%(on). After about 50mSec of switch-on.The frequency is changed to normal value(15.625KHz) and duty cycle to 50%. During switching-off. Also the frequency is switched to the double value and R.G.B drive is set to Max. and after 100mSec R.G.B is set to Min. and 50mSec later the H drive is switch-off. 4. The H drive pulse from the LA76931 is amplified by the horizontal drive circuit,to get sufficient base drive current for the high voltage switching TR(Q402).
V-OUT
1
2
3
4
5
O/P STAGE
6
7
V-NECK
C307 24 V
R302 R315 C314
60Vpp
V-REF
PUMP -UP
PUMP-UP
GND
AMP
VCC
V-IN
C306 R316 C302 R313 9V
D302 R310 C310
C301
R301 R309 R311 C312 R307 R308
R405 R406 R404 * C411 R418 Q401
C408
i1(t1~t2) i3(t3~t4) i2(t2~t3)
17
18
19
20
H-DY
FBT
1
R305
C311
V-OUT
-
-
IC501
H-Out
T403 HDT R403 C404 R401
Q402
C414 (Cr) C412 (Cs)
i4(t4~t5)
IC501
R303 R304
-
Horizontal Circuit
48
47
46
45
B+ 110V
3
Vertical Circuit
DVD-Y
-
-
-
Page 76 of 107
LGE/ NTV
V-DY
R100
R906 R905 R921 R922 R916
Ext. Video
L102
9V
R249
1 10 11 12 13 14 15 16 R OUT G OUT B OUT RF AGC VIDEO OUT INT VIDEO EXT VIDEO SVO/FSC CR CB GND 62 61 60 59 58 57 56 55 54 53 52 51 50 49 IF IN 63 IF IN 2 3 4 5 64
R530
V1 IN V OUT L1 IN
8 7
6
R531 C523 R247 9V
L OUT
9
R1 IN R OUT
J536
R561 J222 C229
ST-5V
17 18
19
DVD-Y -
48 47 46
R226 C212 C211
1 2 20 25 45 3 40
-
-
22 21 20
CIMA I TRAINING MANUAL : AV / RF-ST. MODELS
L212 R251 L211 L213 R252 R250
C726 C210
26 27 28 29 30 31 32 SW2 I C DATA I2C CLOCK
2
4 SW1 39 38 37 36 35 34 33 5 6 7 8 9 10 11
VIN1 VIN2 MODEA
VIDEO OUT MODEB VIN3
19 18 17 16 15 14 13 12
Page 77 of 107
C293
J525
LGE/ NTV
IN1
R608 R100 R605 C609
IN2
R611
L102 C604
R612
R606
Ext. Video
9V
19 20 21 SDA SCL 22 23 L - OUT 24 25 30 1 SIF OUT SIF IN 6 AUDIO OUT 7 8 9 10 11 12 25 IF IN IF IN GND 64 63 62 61 60 59 31 32 33 34 R - OUT 18 17 16 15 14 13 12
J503 R704 R701 C225 L223 J521
L1 IN L OUT R1 IN R OUT L501 C501
2 3
C213 C234
MNT - L L - IN MNT - R R - IN 7 6 5 4 3
R501
C503
4 5
C704 R503 C729
58 57 56 55 54 53 INPUT A (R) 2 1 35 INPUT A (L) 36 -
ST-5V
C701 C757
1 L IN1
C702
22 DVD L IN
CIMA I TRAINING MANUAL : AV-ST. MODELS
C758
C759 C760 40
2 3 4
L IN2 L IN3 R IN1 -
DVD R IN -
21 20 19
5V
1 2 3 CLOCK DATA 4 5 ID 6 AUDIO 7 VIDEO 8
C761
26 27 28 29 30 31 32 SW2 I2C DATA I2C CLOCK SW1 39 38 37 36 35 34 33
5 6
R IN2 R IN3
L OUT R OUT
18 17
C762
7 8 9 10 11
VIN2 MODEA
MODEB -
16 15 14 13 12
Page 78 of 107
C820 C821 C242
HIC291
R760
L217
C677
LGE/ NTV
CIMA I TRAINING MANUAL : RF-ST. MODELS
JA02
V2 L2 R2
L217 L218 C213 C234
RF ST. MODELS AUDIO SIGNAL FLOW
C704 C702
C235
C233
IC601 LA42072
IN1 IN2
52
51
48
47
46
45
40
39
38
37
32
31
30
29
28
27
22
21
20
19
18
17
16
15
14
13
SIF IN
AV - R
MNT - R -
DVD L IN
DVD R IN
MODEB
L OUT
MNT - L
R OUT
AV - L
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
C610
C603 C609 C604
-
R616
R605
R611
IC661 MSP3425G
SPK - R SPK - L
IC751 LA7958
MODEA R IN1 R IN2 R IN3 L IN3 VIN2 -
-
12
1
2
3
4
5
6
7
8
9 10 11 12 13
Explanation
1. SIF just send out from pin 1 of IC501 and through to pin 47 of IC661. Also the external audio from external equipment just send out from IC751 to IC661. IC661 will be detect FM, AM, A2 and NICAM signal from SIF signal by Multi-Standard Digital Stereo Demodulator circuit . 2. When user select external signal, the internal audio (from SIF) cannot send out from pin 24, 25 of IC661 because, the IC501 has order by I2C signal and not permit the audio from SIF signal to send out. 3. After selected the audio signal, the audio signal will be separate 2 ways. 3.1 Send out to pin 30, 31 of IC661 for JA01 (audio out L/R) 3.2 Send to stereo audio processing circuit in IC661 for adjust the quality of sound, such as Equalizer, Balance, Turbo sound, SSM etc. 4. IC661 pin 24, 25 just send the audio signal out to IC601 for amplify before sent the final audio signal to speaker.
C242
C677
R612
L IN1
SDA
SCL
L IN2
-
-
-
-
-
-
-
-
-
-
-
-
C757 2
C760
L217
13
14
15
16
21
22
23
24
25
26
10
11
1
5
6
7
8
1
3
4
5
6
7
8
2
9
Q672
R665 9V
R666
Q671
C762
R761 J511 R705 R707 R567
C759
C668
C667 C732 C731 C758
C243
< OPTION >
R101
9V
C101
Z111
C740 C741
54321
63 62 61 60 59 58 57 56 55 54 53
R708
64
40
C761
39
38
37
36
35
34
GND
SW1
IF IN
IF IN
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R701
R704
C686
-
33
J521
J503
10
11
12
25
26
27
28
29
30
31
C104
Q101
R100
IF
C225
C501
R103
R104
C503
*
R21
R23
32
1
2
3
4
5
6
7
8
9
R102
C115
I C CLOCK
I2C DATA
L102
R105
C111
C105
IC501
SIF OUT SIF IN -
LA76931
SW2 -
2
ID 6
AUDIO 7
R501
ST-5V
R516 L223 L501 C131 C51
VIDEO 8
SDA
HIC291
2
3
4
1
5
R760
CLOCK
5V
DATA
C820 C821
SCL
C130
R514 C50 L221 L224 L1 IN R1 IN
L222
TU101
Table 1 1 0 0 1 0 1 0 1
AV1 AV2 DVD L/R GAME Ext. Video
MODE A MODE B (SW1) (SW2)
C214 C226 C221 C215 C222 R OUT L281 C287 C286
JA01 AV1
L OUT
STATUS
L280
JA01 DVD
C677
Page 79 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : AUDIO POWER AMPLIFIER
S - VCC C602 C627 C621 C601 C201
Audio Power Amplifier (Mono models)
ER-O ER-I R206 EL-I EL-O
7
36 R618 D601 C608 ST-5V 6 R503 R528 C604 R611 R614 C603 MUTE
FB201 VCC
6
STANDBY
IC601 LA42071 R+
8
C606 R-IN
Explanation
P601
R205
IC501
5 4
PRE-GND
1 3
SPK L
3 2
RIPPLE FILTER L-IN
R9
POWER GND 10
R603 J616 P602
C612
J613
1. IC601 (LA42071) is mono audio amplifier. The audio signal from IC501 just flow to pin4 of IC601. And pin 6 of IC601 just receive voltage high abount 2V from IC501 when sound mute and 0V when normal mode. 2. In the case of mono models with 2 speaker. The J616, P602 and speaker channel right will be adding on the chassis also.
ITEM C543 C604 R503 R528 R611 T803
7 W. 333 103 3.9K 4.3K 43L
5 W. 333 222 4.3K 1.8K 43L 333 103 -
3 W.
1
C611
L11
R604
333 822 5.1K 1.8K 43K
1 4
J610
SPK R
5.1K 2.0K 43K
L+
12 S - VCC C602 C627
C621
C601
C201
IC501
36
R618
D601 C608 ST-5V R612 R614 C603 C604 R611
MUTE
ER-O ER-I
R206
STANDBY
R-IN
8
C606
R205
5 4
R612 R712 PREGND
R+
EL-O
6
EL-I
IC601 LA42072
7
FB201 VCC
P601
Audio Power Amplifier (Stereo models)
Explanation
24
Q671
1 3
SPK L
C667 R666 9V C669 24
R9
POWER GND 10
R603 J616
3
MUTE
C612
IC701
AV-ST
23 R665 R616
L11
R604
P602
1. IC601 (LA42072) is stereo audio amplifier. The audio signal from IC701 or IC661 just flow to pin4 and pin 2 of IC601. And pin 6 of IC601 just receive voltage high abount 2V from IC501 when sound mute and 0V when normal mode. 2. Q671, Q672 is buffer for the audio signal from IC661, C608 is pop noise protection when you turn off the main switch power.
IC661
RF-ST
25 Q672 R608
C613 C610
1 4
SPK R
2
C609 R605
L-IN
L+
12 RIPPLE FILTER
R602
C614 C668
1
C611
R601
Page 80 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : MICROCONTROLLER
RF Stereo models (Option) R615 C605
19 20 21 22 SDA SCL 18 17 16 15
IC601
MUTE
9V D604 R617 D602 CH+ CH VOL+ VOL OK MENU
Stereo models
1
2
3
4
5
6
Mute = 1.9 V 7 8 9 10 11 12 13 Nor. = 0 V
PA01 Pre-amp
2 3 ZD804
LD11 Nor. = 1.7 V ST-BY = 1.8V ID
R20
R19
R18
R17
R16 R565 D805 R1 R60 R72 L3
R609 D601 C608
Q601 R607
C607
CH+ = 0.0V ; OK = 2.5V CH- = 0.5V; VOL- = 3.0V MENU = 2.0V; VOL+ = 3.5V R66
IC701
-
ST-5V
J542
8 MODEA 15 14 13 12
Q10 R58
IC804
4 3 2 1 9V In 9V Out
R707
J706
5 6 7 8
SCL SDA
-
48 47 46 45
R618 C520
C19
9 10 11
IC751
-
MODEB -
IC661
-
J511
J509
Nor. = 4.7 V ST-BY = 0.0V
J550 R803
64
63
62
61
44
43
42
41
40
39
38
37
36
35
34 -
KEY IN
SW1
CDS
RF AGC
MUTE
1
1 64 63 62 61
2
3
-
-
-
-
-
-
-
-
-
-
33
B+ 110V
R704
-
-
GAME CLOCK
ABNORMAL
R701
DEGAUSS
I2C DATA
POWER
3 4
GAME ID
IC02
I2C CLOCK
SCL SDA
GAME DATA
2
P01A EYE MODULE
-
J540 3 IR J502 2
IC805
IC1 1 IC J811 R835
IC802
ZD851
R884
IFB 4
1
SW2
21
22
23
24
25
26
IR
2
3
-
-
-
-
27
28
29
30
31
J521
J503
ST-5V
32
1
2
3
4
ST-5V
IC2
SDA
C131 C51
R23
R21
R831 Nor. = 4.7 V ST-BY = 0.0V J522
R832
Q801 Q813
SCL
C130
R514 C50 ST-5V R11 R566 ST-5V D847
J24
J541 R825
AGC
IC ADJ.
2
C109 CLOCK AUDIO ID
HIC291
8 VIDEO R513 7 6 5 DATA 4 3 2 1 Q16 5V
J523 OCP Circuit
PL801 Q845 R826
*C102 *C110
Q102
V-Nect Circuit X-Ray Circuit
Stand by mode IC501 pin29 = 0V, IC804, Q813 and Q10 cut off, ID high, Q801 on, IC2 high, IC high, IFB high and then Power supply circuit is stand-by mode. Abnormal Circuit Protection In that case of electrical circuit is abnormal operating. The OCP, V-Nect of X-Ray circuit will be operating too. And then Q16 on, pin 25 of IC501 = 0V, the set become to stand-by mode. B+ Over Voltage IC805 take high bias voltage. And then IC1 high, IC high, IFB high too. And then Power supply circuit is stand-by mode.
P101
Page 81 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : POWER SUPPLY
L401
C413
R413
L402
Over Voltage Protection
D847
3 4
GND
ZD851
R835
Page 82 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : POWER SUPPLY
T1 (St-by) T2 (Operating)
Power supply Normal mode operating
Note : I1 = Starting current (Voltage drop on pin4 of IC801) I2 = Main current (Source), (Voltage drop on pin4 of IC801) IFB = Feed back current (Voltage drop on pin6 of IC801) V1 = Main voltage (B+ on pin 3 of T402) V2 = Stand-by 5V (on pin 25 of IC501) V3 = Supply 9V on collector of Q301 V4 = Pump-Up voltage on pin 3 of IC301 1) Turn on the switch power of the set and then Iin1 will be maximum high (Voltage drop on pin4 of IC801 = 18.4V) for a moment. In this time V1 115V, V2 5V (5V St-By operate), V3 0.5V, V4 = 0V, IFB 1.7V and pin29 (power) of IC501 = 0V. And then IC801 will be operating to stand-by mode and still for about 4.12s (T1). Also the voltage drop on pin4 of IC801 at T1 = 11.3V 2) After time of T1 finished, pin29 (power) of IC501 active = 5V, Q813 operate, IC lower, IFB lower too. In this time IC801 is operate mode, T803 has induce from pin14 to pin1, and then Iin2 flow through D801 to pin4 of IC801. So the voltage drop on pin4 of IC801 16.1V (T2) until the switch power off (unplug). At the first time of pin29 (power) of IC501 active = 5V, IC804 supplier the 9V (V3) to corrector of Q301, C308 coupling the V3 to ground for a moment, after that V3 is continuously increasing, but in that time V4 continue immediately high (Houtput circuit operating), and then Q301 operate, V3 pass to ground (0V), Q16 cannot operate. The set to be continuously operating.
V1 V4
Switch Off
V2
Switch Off
V3
V4
T1 (St-by)
T2 (Operating)
Iin2 Iin1
Switch Off
Switch Off
IFB
Page 83 of 107
LGE/ NTV
CIMA I TRAINING MANUAL : POWER SUPPLY
Power supply Abnormal mode operating
T1 (St-by) T2 (Operating) T3 (St-by)
V1 V4
Switch Off
Note : I1 = Starting current (Voltage drop on pin4 of IC801) I2 = Main current (Source), (Voltage drop on pin4 of IC801) IFB = Feed back current (Voltage drop on pin6 of IC801) V1 = Main voltage (B+ on pin 3 of T402) V2 = Stand-by 5V (on pin 25 of IC501) V3 = Supply 9V on collector of Q301 V4 = Pump-Up voltage on pin 3 of IC301 1) Turn on the switch power of the set and then Iin1 will be maximum high (Voltage drop on pin4 of IC801 = 18.4V) for a moment. In this time V1 115V, V2 5V (5V St-By operate), V3 0.5V, V4 = 0V, IFB 1.7V and pin29 (power) of IC501 = 0V. And then IC801 will be operating to stand-by mode and still for about 4.12s (T1). Also the voltage drop on pin4 of IC801 at T1 = 11.3V 2) After time of T1 finished, pin29 (power) of IC501 active = 5V, Q813 operate, IC lower, IFB lower too. In this time IC801 is operate mode, T803 has induce from pin14 to pin1, and then Iin2 flow through D801 to pin4 of IC801. So the voltage drop on pin4 of IC801 16.1V (T2).
V2
Switch Off
V3
V4
Iin2 Iin1
Switch Off
At the first time of pin29 (power) of IC501 active = 5V, IC804 supplier the 9V (V3) to corrector of Q301, C308 coupling the V3 to ground for a moment, after that V3 is continuously increasing. 3) In that case of Open circuit (H-output circuit cannot operating), V4 only high a moment and then V4 = 0V. And Q301 cannot operate, V3 increasing 1.5V (Max = 3.4V), Q16 operate, V2=0V and then the set return to st-by mode again. 4) In that case of Short circuit (Over current flow). The voltage drop on FR403 high, and then Q403 operate, IL2 flow, Q16 operate, V2=0V and then the set return to st-by mode again.
Switch Off
IFB
Page 84 of 107
LGE/ NTV
CIMA II TRAINING MANUAL
MC-059B (CIMA II) PAL CHASSIS MC-059B (14"~21" Conventional/FLAT) (14"~21"
Contain :
Mono model circuit AV Stereo Models circuit RF Stereo Models Circuit Power amplifier Circuit Microcontroller Circuit Power supply Circuit Wave form
Page 85 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : BLOCK DIAGRAMS
DVD R/L
Page 86 of 107
LGE/ NTV
R121
C108 C104 ZD102 R103 R105 L102 C111 R906 R905 R104 R102
C105
R921 D111 R113 R112 R916 J111
1 12 13 14 15 16 17 18 19 20 R OUT G OUT B OUT 25 26 27 INT VIDEO EXT VIDEO SVO/FSC CR CB DVD-Y VIDEO OUT 60 59 58 57 RF AGC 61 GND 62 C116 IF IN 63 IF IN 2 3 4 5 6 7 8 9 10 11 64
R111
R922
R530
R531 C529
56 55 54 53 52 51 50 49 48 47 46 45
CIMA II TRAINING MANUAL : MONO MODELS
9V
V IN V OUT
40 SW2 SW1 / Q-S 30 31 32 I2C DATA I2C CLOCK 39 38 37 36 35 34 33 28 Game Data PAL/NTSC 29 -
Page 87 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : MONO MODELS & DEFLECTION
5V R113 9V R105 C111 C105 L102 R101 L218 C235 1 2 3 4 5 L217 C677 C233 J539 R511 A IN on P205 (to Side AV) R706 J705
R111
MONO MODELS AUDIO SIGNAL FLOW (WITHOUT IC751)
Explanation
1. IF signal from TU101 flow through to pin 63, 64 of IC501. The Sound detection circuit in IC501 will be detect the SIF signal from IF signal and then send it out by pin 1. The SIF from pin 1 will be return to IC501 again by pin 3. The sound detection circuit (2nd) will be detect the audio signal from SIF and send it out to sound switch circuit and for the JA01 by pin 5 of IC501. 2. External audio is the signal from external equipment, such as VCD, or VCR. Rear A/V (JA01) and front A/V (JA02) is same line circuit but, JA02 has the internal automatic switch on/off. When you put the A/V pluck to JA02 and JA01 in same time. The IC501 will be receive the signal and flow through to pin 9 from JA02 only. 3. Internal signal and External signal will be joint together at sound switch circuit in IC501. When the user select the input signal and then the sound switch circuit will be select the signal follow the user selected. The signal after selected will be send to pin 6 for the audio power amplify circuit before send the to speaker.
IC301 LA78040
THERMAL PROTECTION
R102
C104
C115 D111 R112 Q101 J111
JA02 FRONT AV
64 63 62 61 60 59 58 57 56 55
A Out on P205 (from Side AV)
R121
R103
R104
54
53
52
51
50
49
48
47
46
45
40
39
38
37
36
35
34 31 I2C DATA
IF IN
IF IN
TU101
IF NC
R110 C101 Q111 PAL NTSC
GND
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
EXT. AUDIO IN
AUDIO OUT
28 Game Data PAL/NTSC 29 -
30V LNA 5V
ZD102 C103
B+
10
11
12
13
14
15
16
17
18
19
20
25
26
27
30
J112 9V C108 R132 J507 R502 J114 I2C Data I2C Clock J106 5V
R108
J3
5V SDA SCL CS NC
IC601 LA42071
IN
C504
1
2
3
4
5
6
7
8
9
10
11 J610
12
13
C543
J109
C501 R501
C503
R528
R109
J613 J616 C603 L221 C215 P602 R708
AGC
C110 C109
RF-AGC
J152
L501
R154
R611
Q101
Q-Search
R152
R533
R153
J506
J511
C508
C604
Q501
9V
J101
L OUT
JA01 REAR AV
L IN
SPK
32
1
2
3
4
5
6
7
8
9
I2C CLOCK
IC501
-
LA76931
-
SIF OUT
FM OUT
SIF IN
-
-
-
-
-
-
33
Explanation
1. The H drive output is open collector and active low, I.e. the H-out TR should conduct during the low period of output. 2. Under normal operation condition the duty cycle of the output pulse is 50%. 3. To ensure a smooth start/stop behavior of the horizontal deflection and protect the H-out TR, there are 3 different condition of H-drive output. During switch-on.The horizontal output starts with
B+ 110V
41 42 43 44 24 23 22 21
the double frequency(31KHz) and with duty of 75%(off),25%(on). After about 50mSec of switch-on.The frequency is changed to normal value(15.625KHz) and duty cycle to 50%. During switching-off. Also the frequency is switched to the double value and R.G.B drive is set to Max. and after 100mSec R.G.B is set to Min. and 50mSec later the H drive is switch-off. 4. The H drive pulse from the LA76931 is amplified by the horizontal drive circuit,to get sufficient base drive current for the high voltage switching TR(Q402).
i1(t1~t2) i3(t3~t4)
V-OUT
1
2
3
4
5
O/P STAGE
6
7
V-NECK
C307 24 V
R302 R315 C314 C301 R310
V-REF
PUMP -UP
PUMP-UP
GND
AMP
VCC
V-IN
C306 R316 C302 R313 9V
D302
TP16
C310
R301 R309
TP15
17 18 19 20
TP14
R311 C312 R307
R308
R405 R406 R404
TP11
C408
TP13
FBT
1
R305
C311
V-OUT
-
-
IC501
H-Out
Q401 R418
TP12
T403 HDT R403
Q402
i2(t2~t3)
C414 (Cr)
H-DY
C412 (Cs)
IC501
R303 R304
-
Horizontal Circuit
C404
-
-
48
47
46
45
i4(t4~t5)
B+ 110V
-
R401
3
DVD-Y
* C411
Vertical Circuit
Page 88 of 107
V-DY
LGE/ NTV
CIMA II TRAINING MANUAL : AV / RF-ST. MODELS
L901 P901 FR932 CPT R923 R912 R917 R920 L902 R919 R918 Q902 L903 Anode HV Focus R906 R905 R921 R922 R916 R915 R908 D902 R902 180V D901 C901 R562 5V C539 R105 C111 C105 R101 Z111 1 2 3 4 5
C116 22
R536
21 20 19
J553 1
R760
18 17 16 15 14 13 12
C527
9V B L904 G R
R527
5V
2 3 4 CLOCK 5 DATA 6 7 8 ID AUDIO VIDEO
9 8 7 6 5 4 3 2 1
R561
VIDEO OUT
MODEB
VIN3
C295
AV / RF ST. MODELS VIDEO SIGNAL FLOW (WITH IC751)
Explanation
1. IF signal from TU101 flow through to pin 63, 64 of IC501. The video detection circuit in IC501 will be detect the video signal from IF signal and then send it out by pin 60. The video out from pin 60 will be return to IC501 again by pin 56 and we're can call this signal is "Internal Video" 2. IC751 is service switch for the video/ audio signal from the external equipment. All of the external signal will be flow to IC751 but, only one signal from external equipment can be out from IC751. IC751 just receive the command order form IC501 by mode A and mode B (pin 11, 13 of IC751). When the user select the input signal (by press TV/AV button on the remote control or submenu on the set) and then the video switch circuit will be select the signal follow the user selected. The signal after selected will be send to pin 54 of IC501 (external video input). 3. DVD Y, Pb, Pr just flow to IC501 at pin 48, 49, 51 directly. 4. The next step of video processing it's just like video processing in mono model step 3 and 4 5. The command order from IC501 to IC751 (mode A & mode B) just like table 1 data.
Table 1
MODE MODE A B (SW1) (SW2) 1 0 0 1 1 0 1 1 STATUS AV1 AV2 DVD L/R GAME Int. Video RF signal Video Processing
-
-
-
-
-
-
-
Q901
ZD505
Q903
10
11
1
2
3
4
5
6
7
8
9
MODEA
VIN1
VIN2
VCC
-
-
-
-
-
-
-
J525
IC751 LA7958
-
C763
C765
R761
Screen
Q241 C246
R247
C902 SK901
C904
C907
R249
R711
J534 R226 J511
9V
C210 R563 R564 C211 C212
L102
R111
R530
R531
R102
C104
C115 D111 R112 J111
64 63
62
61
60
59
58
57
C523
56
55
54
53
52
51
50
C537
9V
R113
49
48
47
46
45
40
39
38
37
36
35
34
Q101 R121 R103
CR
CB
INT VIDEO
VIDEO OUT
EXT VIDEO
SW1 / Q-S
IF IN
IF IN
GND
RF AGC
SVO/FSC
DVD-Y
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R104
28 Game Data PAL/NTSC 29 -
R OUT
IF NC
R110
C101
Q111 PAL NTSC
10
11
12
13
14
15
16
17
18
19
20
25
26
27
30
31
I C DATA
G OUT
B OUT
TU101
1 2 3 4 5 6 7 8 9
30V LNA 5V
ZD102 C103
B+
J112
J3
9V C108 R132 J507
R516 C51 C131 R514 C50
R21
R23
5V SDA SCL CS NC AGC
ST-5V R712 P902-1 P902-1 1 R G RF-AGC B 2 3 4 5 9V R505 R506 R507 J536 V1 In V Out
32
I2C CLOCK
IC501
-
LA76931
SW2 -
-
2
-
33
L225 L212 L211 L213
J106
5V
R108
C130
R109
L216 R251 R252 R250
J152 C109 R154
C293
Heater
HIC291
Ext. Video
C110
Q101
R153
J506
J511
Q-Search
R152
JA02 AV2 JA01 AV1
Video SW
DVD-Y
Page 89 of 107
LGE/ NTV
IC601 LA42152
R121
C108 C104 ZD102 R103 R105 L102 C111 R605 C105 C609 R611 R104 R102
J503
R704
C604
19 20 SDA SCL 21 22 23 24 25 L - OUT 30 31 32 R - OUT 18 17 16 15 14 13 12
J521
R701
D111 R113 R112 R501
1
R111
MNT - L
MNT - R
7 6 5
J111 L223
SIF OUT SIF IN AUDIO OUT 11 12 25 26 27 60 59 58 57 56 55 54 53 61 GND 62 C116 IF IN 63 IF IN 64 2 3 4 5 6 7 8 9 10
33 34
L - IN
R - IN
4 3
L501
C704 R503 C729
INPUT A (R) 2 1 35 INPUT A (L) 36 -
C701
C702 C757 C758 C759 C760 C761
1 2 3 4 5 6 40 22 L IN1 L IN2 GM-A R IN1 R IN2 GM-A DVD L IN DVD R IN L OUT R OUT 21 20 19 18 17
CIMA II TRAINING MANUAL : AV-ST. MODELS
SW2
SW1 / Q-S 30 31 32 I2C DATA I2C CLOCK -
C762
39 38 37 36 35 34 33
7 8 9
VIN2
-
16 15 14
Page 90 of 107
Ext. Video
C234
10 28 Game Data PAL/NTSC 29 11
MODEA
MODEB -
13 12
C233
J720
HIC291
C248
R760
J721
LGE/ NTV
IC601 LA42152
R121
C108 C104 ZD102 R103 R105 L102
29 SCL SDA 45 W Out L W Out R 27 26 25 24 23 22 21 30 31 28
R611 R605
R102 C604 R616
C609
R104 C111
C105
32 33 34
J503 Q-Search
36
R704 J706
35
J673 C659
J642
J521 R701 J707 C686 C663 J631 PAL NTSC D111 R113 R112 J111
1 SIF OUT SIF IN 12 25 26 27 60 59 58 57 56 55 54 53 61 GND 62 C116 IF IN 63 IF IN 64
J672
J641
46 47 48 49 50 51 52 53 54 55 56 -
R - IN L - IN R - Out L - Out S IF
12 11 10 9 8 7 6
R556 J668 J630 J538 J115
R111 5V
5 4 3 2 1
L501
2 3
R501
4 5 6 7 8 9 10 11
C704
C757 C758 C759 C760 C761
1 2 3 4 5 6 40
L IN1 L IN2 GM-A R IN1 R IN2 GM-A
DVD L IN DVD R IN L OUT R OUT
22 21 20 19 18 17
CIMA II TRAINING MANUAL : RF-ST. MODELS
SW2
SW1 / Q-S 30 31 32 I2C DATA I2C CLOCK -
C762
39 38 37 36 35 34 33
7 8 9 10 28 Game Data PAL/NTSC 29 11
VIN2 MODEA
MODEB -
16 15 14 13 12
Page 91 of 107
Ext. Video
J720
HIC291
C248
R760
J665
RF-ST. Models
LGE/ NTV
C237 ER-O SW R236 R235 L231 C236 L230 C238 C239 ER-I EL-I SW EL-O
CIMA II TRAINING MANUAL : AUDIO POWER AMPLIFIER
Page 92 of 107
MUTE J616 ER-O SW R215 R216 C239 C238 ER-I EL-I SW EL-O
LGE/ NTV
P101 J503 R704 R707
J521
R701
J706
ST-5V
D601
VIDEO AUDIO ID DATA CLOCK
2 3 4 21 1
GAME ID -
RF AGC -
64 63 62 61 44
5V
22 23 24 25 26 27 28 29 30 31 32
GAME CLOCK ABNORMAL IR SW2 GAME DATA POWER DEGAUSS I2C DATA I2C CLOCK
KEY IN CDS SW1 MUTE -
43 42 41 40 39 38 37 36 35 34 33
CIMA II TRAINING MANUAL : MICROCONTROLLER
Page 93 of 107
R826 R825 D847
J511
ST-5V R565 D805 ZD804
B+ 110V R884 9V Out
ZD851
IC802
LGE/ NTV
CIMA II TRAINING MANUAL : POWER SUPPLY
L401
C413
R413
L402
Over Voltage Protection
D847
3 4
GND
ZD851
R835
Page 94 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : POWER SUPPLY
T1 (St-by) T2 (Operating)
Power supply Normal mode operating
Note : I1 = Starting current (Voltage drop on pin4 of IC801) I2 = Main current (Source), (Voltage drop on pin4 of IC801) IFB = Feed back current (Voltage drop on pin6 of IC801) V1 = Main voltage (B+ on pin 3 of T402) V2 = Stand-by 5V (on pin 25 of IC501) V3 = Supply 9V on collector of Q301 V4 = Pump-Up voltage on pin 3 of IC301 1) Turn on the switch power of the set and then Iin1 will be maximum high (Voltage drop on pin4 of IC801 = 18.4V) for a moment. In this time V1 115V, V2 5V (5V St-By operate), V3 0.5V, V4 = 0V, IFB 1.7V and pin29 (power) of IC501 = 0V. And then IC801 will be operating to stand-by mode and still for about 4.12s (T1). Also the voltage drop on pin4 of IC801 at T1 = 11.3V 2) After time of T1 finished, pin29 (power) of IC501 active = 5V, Q813 operate, IC lower, IFB lower too. In this time IC801 is operate mode, T803 has induce from pin14 to pin1, and then Iin2 flow through D801 to pin4 of IC801. So the voltage drop on pin4 of IC801 16.1V (T2) until the switch power off (unplug). At the first time of pin29 (power) of IC501 active = 5V, IC804 supplier the 9V (V3) to corrector of Q301, C308 coupling the V3 to ground for a moment, after that V3 is continuously increasing, but in that time V4 continue immediately high (Houtput circuit operating), and then Q301 operate, V3 pass to ground (0V), Q16 cannot operate. The set to be continuously operating.
V1 V4
Switch Off
V2
Switch Off
V3
V4
T1 (St-by)
T2 (Operating)
Iin2 Iin1
Switch Off
Switch Off
IFB
Page 95 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : POWER SUPPLY
Power supply Abnormal mode operating
T1 (St-by) T2 (Operating) T3 (St-by)
V1 V4
Switch Off
Note : I1 = Starting current (Voltage drop on pin4 of IC801) I2 = Main current (Source), (Voltage drop on pin4 of IC801) IFB = Feed back current (Voltage drop on pin6 of IC801) V1 = Main voltage (B+ on pin 3 of T402) V2 = Stand-by 5V (on pin 25 of IC501) V3 = Supply 9V on collector of Q301 V4 = Pump-Up voltage on pin 3 of IC301 1) Turn on the switch power of the set and then Iin1 will be maximum high (Voltage drop on pin4 of IC801 = 18.4V) for a moment. In this time V1 115V, V2 5V (5V St-By operate), V3 0.5V, V4 = 0V, IFB 1.7V and pin29 (power) of IC501 = 0V. And then IC801 will be operating to stand-by mode and still for about 4.12s (T1). Also the voltage drop on pin4 of IC801 at T1 = 11.3V 2) After time of T1 finished, pin29 (power) of IC501 active = 5V, Q813 operate, IC lower, IFB lower too. In this time IC801 is operate mode, T803 has induce from pin14 to pin1, and then Iin2 flow through D801 to pin4 of IC801. So the voltage drop on pin4 of IC801 16.1V (T2).
V2
Switch Off
V3
V4
Iin2 Iin1
Switch Off
At the first time of pin29 (power) of IC501 active = 5V, IC804 supplier the 9V (V3) to corrector of Q301, C308 coupling the V3 to ground for a moment, after that V3 is continuously increasing. 3) In that case of Open circuit (H-output circuit cannot operating), V4 only high a moment and then V4 = 0V. And Q301 cannot operate, V3 increasing 1.5V (Max = 3.4V), Q16 operate, V2=0V and then the set return to st-by mode again. 4) In that case of Short circuit (Over current flow). The voltage drop on FR403 high, and then Q403 operate, IL2 flow, Q16 operate, V2=0V and then the set return to st-by mode again.
Switch Off
IFB
Page 96 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : POWER SUPPLY
T803
S-Vcc 17V
13.9V / 25mA C309 330/25
LA42152 (Pin 7, Vcc)
D824 SFAF504G
10.3V / 525mA
9V
D813 RU3AMV
C309 330/25
R833 56/0.5W
D820 1N4148
IC 04 KIA78L05BP
4.96V / 37mA
D-Coil Relay T/X Pre-amp LA42152 (Pin 5, St-by) LA76941 (Pin 35, Vcc) AT24C04 (Pin8, Vcc)
C803
HV 3
IC 804 KIA78R09PI
D-Coil Relay
R610 (0RS)18/2W
T/X Pre-amp LA42152 (Pin 5, St-by) LA76941 (Pin 35, Vcc) AT24C04 (Pin8, Vcc)
2
180V D505 RGP10J
181.8V/18mA. C540 4.7/250V
RGB PCB
Power Supply
1
10 9
R416 FR40 1
AFC
HEATER
R620 (0RS)10/1W
IC 803 KIA7805A
5.04V
IC501 (Pin 55, VCD) HIC291 (Pin1, Vcc)
R132 (0RS)47/2W R513 120 1/2W R529 75 1/6W LA78040N Pin2 , Vcc
5.01V 5.2V 8.0V 8.91V
FOCUS
4
Tuner 5V LA76941 (Pin43) LA76941 (Pin11, RGB Vcc) LA7958 (Pin 8, IF Vcc) EYE Vcc LV1116N (Pin17, Vcc)
SCREEN
11 6
24V D301 RGP15J
28.4V/320mA. C309 470/35V
R517 10uH
8
T402
B+ 110V
D826 RU3AMV
110.27V/395mA C831 220/160
110.1V L802 82uH
110.07V FR403 (RF)1.2/2W
109.63V/380mA. 27.97V R107 (RS)12K/2W
FBT B+ Tuner 30V
R833 (RS) 0.47/2W
Page 97 of 107
LGE/ NTV
CIMA II TRAINING MANUAL : WAVE FORM
TP19 TP3 TP6
TP15
TP1, 2, 9 TP4
TP16
TP7 TP12, 11
TP5 TP17
TP13
TP14
Page 98 of 107
TP8
TP18
LGE/ NTV