How it Works
Zenith
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LGB-26A11ZM
Schematic
13 pgs1.61 Mb0
Diagram
49 pgs5.11 Mb0

Zenith LGB-26A11ZM Schematic

SCHEMATICS
SECTION 6
Interconnect Diagram
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MODEL SCR AUDIO PIP JACKS
COMPONEN T LEVEL R EPAIR ON L Y
B25A02Z B25A10Z 25
B25A10Z6 25 B25A10ZC 25 B25A10ZC6 25 B25A10ZCF 25 B25A11Z 25 B25A11Z6 25 B25A11ZF 25 B25A24Z 25 B25A24Z6 25 B25A24ZF 25 B25A30ZC 25 B25A30ZC F 25 B25A74R 25 B25A74LK 25 B25A76R 25 B27A10Z 27 B27A10Z5 27 B27A10Z6 27 B27A10ZC 27 B27A10ZC 5 27 B27A10ZC 6 27 B27A10ZC F 27 B27A11Z 27 B27A11Z5 27 B27A11Z6 27 B27A11Z65 27 B27A11ZC 27 B27A11ZC 5 27 B27A13Z 27 B27A24Z 27 B27A24Z5 27 B27A24Z6 27 B27A24Z65 27 B27A24ZF 27 B27A24ZF 5 27 B27A30Z 27 B27A30ZC 27 B27A30ZC 5 27 B27A30ZC 6 27 B27A30ZC 65 27 B27A30ZC F 27 B27A30ZCF5 27 B27A34Z 27 B27A34Z6 27 B27A34ZF 27 B27A74R 27 B27A76R 27
25
Mono None 0 Stereo None 0 Stereo None 3 Stereo None 0 Stereo None 3 Stereo None 0 Stereo None 3 Stereo None 3 Stereo None 3
MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6
Stereo 1 Tuner 3 Stereo 1 Tuner 3
MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6
Stereo None 0 Stereo None 0 Stereo None 3 Stereo None 0 Stereo None 0 Stereo None 3 Stereo None 0 Stereo None 3 Stereo None 3 Stereo None 3 Stereo None 3 Stereo None 3 Stereo None 3 Stereo None 0
MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6 MTS/SAP None 6
Stereo 1 Tuner 3 Stereo 1 Tuner 3 Stereo 1 Tuner 3 Stereo 1 Tuner 3 Stereo 1 Tuner 3 Stereo 1 Tuner 3 Stereo 1 Tuner 3
MTS/SAP 1 Tuner 6 MTS/SAP 1 Tuner 6 MTS/SAP 1 Tuner 6 MTS/SAP None 6 MTS/SAP None 6
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MODEL SCR AUDIO PIP JACKS
COMPONEN T LEVEL R EPAIR ON L Y
CB25A25Z CB25A25Z 6 CB27A10Z CB27A10Z C CB27A25Z LGB26A11ZM LGB26A11ZM6 LGB29A10ZM LGB29A10ZM5 LGB29A11ZM LGB29A11ZM5 LGB29A13ZM LGB29A24ZM LGB29A24ZM5 LGB29A30ZM LGB29A30ZM5
B32A24Z B32A24Z6 B32A24ZF B32A30Z B32A30Z6 B32A30ZF B32A34Z B32A34Z6 B32A34ZF B36A24Z B36A24Z6 B36A24ZF B36A30Z B36A30Z6 B36A30ZF B36A34Z B36A34Z6 B36A34ZF
25
MTS/SAP N one 6
25
MTS/SAP N one 6
27
Stereo None 0
27
Stereo None 0
27
MTS/SAP N one 6
25
Stereo None 3
25
Stereo None 3
27
Stereo None 0
27
Stereo None 3
27
Stereo None 3
27
Stereo None 3
27
Stereo None 0
27
MTS/SAP N one 6
27
MTS/SAP N one 6
27
Stereo 1 Tuner 3
27
Stereo 1 Tuner 3
MODULE LEVEL REPAIR ON L Y
32
MTS/SAP N one 6
32
MTS/SAP N one 6
32
MTS/SAP N one 6
32
Stereo 1 Tuner 3
32
Stereo 1 Tuner 3
32
Stereo 1 Tuner 3
32
MTS/SAP 1 Tuner 3
32
MTS/SAP 1 Tuner 3
32
MTS/SAP 1 Tuner 3
36
MTS/SAP N one 6
36
MTS/SAP N one 6
36
MTS/SAP N one 6
36
Stereo 1 Tuner 3
36
Stereo 1 Tuner 3
36
Stereo 1 Tuner 3
36
MTS/SAP 1 Tuner 6
36
MTS/SAP 1 Tuner 6
36
MTS/SAP 1 Tuner 6
MENU CH-UP CH-DWN VOL-UPVOL-DWN ON/OFF
SW3
SW6 SW5
IR6000
IC6000
PIPB1
1
IN
G
OUT
1
IC1402
1
1
IC804
A-18785-02
OUT LOUT R
IN LIN RVID
CRT1
6P2
MENU
C
TU6000
TGND
VOL DOWN VOL UP CH DOWN CH UP POWER
6K2
Q5101
C
E
B
5F2
C
5C2
EB
Q5103
Q5102
EB
R + UP G + UP B + UP FBLNK
R G B
SW + P IP
GND
VIN PI P
ICX2200
1
4G9
JACKPACK IS SOLDERED TO MAIN CHASSIS
2C5
G-OUT
R-OUT
B-OUT
GND
1
1
+5V SIDE Y
IR DATA
GROUND
+9V
GND R-OUT G-OUT B-OUT
+9V
KEYBOARD VARIES BY MO DE L SOM E H AVE FEWER KEYS, SEE MODEL BOM FOR
KEY 1
KEY 2
KEYBOARD APPLICATION SPECIFICS.
2K6
+215V
GROUND FILAMENT
PIPA1
1
FLYBACK VRAMP
GND
+5 V
GND
+9 VSW
GND
SCL
SDA
DL2200
J1
12
ENTER ADJ LEFT ADJ RIGHT SELECT
FOCUS
G2
SW + PIP
FLYBACK
VIN PIP
VRAMP
+9 VSW
+5 V
GND
GND
GND
SDA
SCL
1
PIPB
1
G + UP
B + UP
R + UP
FBLNK
GND
BGR
1
PIPA
169
IC2502
81
GROUND
+5VSTDEY
DATA
CLOCK
CONTROL
9-2107
IC2501
A-18785-03
IN LIN RVID
Y/C
IR1
9S4
FX3402
IC1400
OUT VCC
GND
6K2
1
SW4
TX3401
QX3251
C
EB
SW1
IC2100
LEFT INT SPKR LOW
RIGHT INT SPKR LOW
ICX3412
LEFT INT SPKR HI
RIGHT INT SPKR HI
FX3401
SW6SW3SW2SW1 SW4 SW5
FILAME NT
GROUND
EX3401
1
LX3401
QX3203
BCE
2F5
TX3204
+215V
LEFT SPEAKER
SPKR
RIGHT SPEAKER
SPKR
3R8
3R8
3T8
3Y3
FOCUS
AC HIGH
AC LOW
DEGAUSS DEGAUSS
G2
ULUL
DAG GROUND
SW2
ICX3401
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR INDICATE SURFACE MOUNTED COMPONENT
CA SHEET 16-1

Power Supply

12345678
910 11 12
SHEET 3
PWRCONT
CX3407 330UF 200V
+18 VSW
0.2
Q3403
121-1340A
DEG-CLT
PWRCONT
C
0.65
R3419
B
E
0
4.7K
1/4W
W3401
Q3405
PROV
E
C
R3425M
PROV
+18 VSB
B
Q3404
121-1102A
17.93
R3412M 10K
R3414
2.2K
0.029
0
C
E
Q3402
121-1340A
B
0.64
R3418
4.7K
1/4W
18.70
E
R3426M
B
PROV
+18 AUD
18.40
C
DEG-CTL
ICX3401
221-213-09 126-3326-02
1
3
IN OUT
2
0
8.95
C3429
16V 100UF
+9V
SW
+18 VSB
L3405
56UH
20-4462-18A
+18 VSW
RX3417
CX3430 470UF 25V
15 5W
CX3428
PROV
14.86
G
3T8
58-546-02
2
1
TO
DEGAUSSER
THX3415
63-10710A
KX3401
195-161
3
2
DX3405
4
1
103-347-3A
DX3400 212-172-04 (PACKAGE FOR 32/36”)
F
3R8
58-546-03
1
2
3
A.C.
E
LINE
FX3401
136-114-23A
EX3401 38-102
RX3400
5.6M 1/2W
4A-250V
CX3400
0.0047UF 500V
CX3401
0.1UF 250V AC
LX3401
95-4285
3
4
1
6
DX3401, DX3402, DX3403, DX3404 103-588A (DISCRETE FOR 25/27”)
CX3403
1000V
1000PF
D
X
3
4
0
1
CX3406
4
0
4
3
1000PF
X
D
1000V
CX3402
0.0047UF 500V
CX3405
1000V
1000PF
CX3404 1000PF 1000V
RX3401
0.68 5W
2
0
4
3
X
D
DX3400
D
X
3
4
0
3
B+ VDC
D
C3425 470UF
25V
B+
*
CX3420
220MFD
200V
D3411
C3421
470PF
500V
RX3427
P/L
RX3423
P/L 2W
+18 VSB
CX3424 1000UF 25V
IN OUT
10.82
ICX3402
221-213
123
4.96
+18 VSW
RX3428
ZDX3401
+5V
SB
P/L
15V
C3426 220UF
16V
103-279-24A
W3402
E
C
C3460 220UF 25V
R3422M
PROV
Q3406
PROV
+15 VSW
D3414
+5V
TUNE
PROV
B
R3424
PROV
L3407
P/.L
VDC
SWITCH MODE REGULATOR
C
B
ICX3400
P/L
5
4
0.135
3
140.8
2
0.458
1
-41.79
A
CX3408
470PF 500V
CX3409 1000PF 2000V
DX3406
103-344-06
RX3406
47
1/4W
RX3403
0.15 5W
0.133
CX3410 1000PF 500V
RX3404
180K 1/2W
B
CX3412 1000PF 500V
B+ VDC
0.45
C
QX3401 121-1348
E
0
CX3413
50V 22UF
CX3411
0.033 50V
RX3407
P/L
RX3409
15OHM
1/2W
RX3408
DX3407
103-344-06
DX3408
103-344-06
CX3418
220PF 500V
LX3410 149-549
P/L
CX3416
25V 100UF
RX3405
RX3410
PROV RX3411
PROV
B+
VDC
CX3415
1.2
3W
1250V
C3414
PROV
TX3401
P/L
18 11
8
7
13
5
15
1 4
16
0.01
DX3409
PROV
FX3402
P/L
LX3403
149-540-01
C3419
470PF 500V
149-540-01
D3410
103-589
LX3404
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR INDICATE SURFACE MOUNTED COMPONENT
CA SHEET 26-2
Audio Processor Stereo
SHEET 2
SHEET 4
SHEET 5
Composite Audio
This schematic applies to the following CA models:
B25A10Z B25A10Z6 B25A10ZC B25A10ZC6 B25A10ZCF B25A11Z B25A11Z6 B25A11ZF B25A30ZC B25A30ZCF B27A10Z B27A10Z5 B27A10Z6 B27A10ZC
B27A10ZC5 B27A10ZC6 B27A10ZCF B27A11Z B27A11Z5 B27A11Z6 B27A11Z65 B27A11ZC B27A11ZC5 B27A13Z B27A30Z B27A30ZC B27A30ZC5 B27A30ZC6
B27A30ZC65 B27A30ZCF B27A30ZCF5 B32A30Z B32A30Z6 B32A30ZF B36A30Z B36A30Z6 B36A30ZF CB27A10Z CB27A10ZC LGB26A11ZM LGB26A11ZM6 LGB29A10ZM
SHEET 4
LGB29A10ZM5 LGB29A11ZM LGB29A11ZM5 LGB29A13ZM LGB29A30ZM LGB29A30ZM5
SHEET 4
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-3a
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR INDICATE SURFACE MOUNTED COMPONENT
CA SHEET 3a
Audio Processor MTS
SHEET 4
SHEET 2
SHEET 5
This schematic applies to the following CA models:
B25A24Z B25A24Z6 B25A24ZF B25A74LK B25A74R B25A76R B27A24Z B27A24Z5 B27A24Z6 B27A24Z65 B27A24ZF B27A24ZF5 B27A34Z
B27A34Z6 B27A34ZF B27A74R B27A76R B32A24Z B32A24Z6 B32A24ZF B32A34Z B32A34Z6 B32A34ZF B36A24Z B36A24Z6 B36A24ZF
B36A34Z B36A34Z6 B36A34ZF CB25A25Z CB25A25Z6 CB27A25Z LGB29A24ZM LGB29A24ZM5
SHEET 4
SHEET 4
Composite Audio
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
6-3b CA SHEET 3b
INDICATE SURFACE MOUNTED COMPONENT
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR
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