Main Microprocessor - Zenith B25A10Z Service Manuallines

1 2 3
PWRCONT
G
DEG-CTL
EXT-L
EXT-R
R6004M
47K
R6003M
10K
IF
F
MUTE
+5V
SBF
R6017M
R6018
P/L P/L
E
R6015
AUD-SWITCH
1K
R6016
1K
SW1
VOL-CTRL ON/OFF
P/L
EXT-AUD
SW2
CH-UP
P/L
R6021M
P/L
D
SW3
VM-OUT-L
CH-DOWN
P/L
SW4
VOL-UP
P/L
R6023M
P/L
SW5
C
VOL-DOWN
P/L
R6024M
P/L
SW6
MENU
P/L
+5V
SBF
L6005
VM-OUT-R
2K6
B
P/L
58-526-05
C6035
C6036M
1 PROV P/L
50V
2
3
4
L6004
SDA
5
P/L
SCL
MUTE
COMP-AUD
CRT-PROTECTOR
A
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER "X" IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
4 5
+5V
WF2
SBF
4.98V
R6001M 20US
4.7K
R6002M
4.3
220
C
+5V
B Q6001
SBF
0.1
121-1310A
E
C6001M R6005M
4.7K
120PF 0
R6006M
50V
5 150
+5V
0.4
C
SBF
R6008M B
10K D6002
E
Q6002 0
C6068M 103-461A
2200PF 121-1310A
50V R6090M
1K
+5V
C6058M
+5V
SBF
SBF 47PF
50V
R6058M
R6012M
39K
47K
R6061M
R6053M
+5V 2.2K
SBF
1.5K
C6061M
C6079M WF
47PF
47PF
50V
R6069M R6070M
50V 12
P/L
P/L
C6093M
63PF 50V
R6026
10K
C6090M
C6043M C6042M C6062M
C6040M
47PF
10000 PROV
120PF 10000
IR6000
25V 25V 50V
50V
P/L
C6092M
47PF
+5V
SBF
R6027
R6028
2.2K
C6003M
P/L
470PF
C6098
C6004
50V
P/L
4.7UF
+5V 50V
SBF L6007
R6030
4.7UH JUMPER
C6037
20-4129-16
220PF R6031M
50V
PROV
C6005M R6032M
220PF
WF4
C6006 50V 15K
2.34V
C6007M
20 US 1UF
50V
1000PF
C6009
R6033M
50V
0.10UF
0
50V JUMPER
C6008M
R6080 PROV
750K
R6034M
CRY6001
1M
C6010M 224-74-02A
20PF
50V
C6011M
20PF
50V
WF12
3.60V
18 US
+5V +5V
SBF
SB
L6001
4.7UH
20-4129-16
C6013
220UF
16V

Main Microprocessor

6 7 8
WF3
WF10
4.40V
5.0V
5MS
5 US
IC6000
P/L
5.2
4.9
1 52
HSYNC R
5.2
51 4.9
2
VSYNC G
2.25
4.9
50
3
B C6024M
AFC
PROV
0 4.9
4 FB 49 C6023M
FM_SD
UP UP
4.9 P/L
0 5 VERT-SIZE 48
C6038M
N/C
3.8
2.9 47PF 50V
HORZ-SIZE
6 47
SYNC
C6095M
4.9
7 47PF 50V
46
VOL
A/D_KEY2
C6055M
4.9
8 N/C
45
47PF
A/D_KEY1
50V
9 44
AUD-
N/C
SWITCH C6053M
PIPSWITCH1 43 160PF 50V
4.9 Y/C-SENSE C6052M
160PF 50V
11 AUX_SW1 42
PIP_BRT C6051M
50V
12 41 160PF 50V
N/C
N/C C6094M
13 40 PROV
H/T R6046M R6045M R6047M
CRT-PROT P/L
C6041M P/L
5.14
R6044M
39 47PF 50V
50V 14 SCL1
MUTE
C6050M
330
4.9
15 SCL2 47PF 50V R6043
38
REMOTE
C6049M 220
R6042M
SDA1 47PF
16 37 50V
N/C
C6048M
330
R6041
36 47PF
17 SDA2 50V
N/C
C6047M
220
4.85
IDENT
18 35 47PF 50V
AVCC
C6019M
1.44
470PF
RADIO/TV 50V
19 34
HLF C6046M
1.44
20 DEG-CTL 33 470PF
50V
RVCO
C6045M
47PF 50V
0.16
POWER 32
21
VHOLD
C6018M
3.42 CHASSIS_ID R6036M 2200PF
22 31
50V
CVIN
P/L
0
23 RESET
30
CNVSS
4.56
24 29
OSC-OUT
R6035M
XIN CRY6002
L6002 PROV
25
28 1M
OSC-IN P/L
XOUT
C6015M
27
26 VCC
4.7K
R6059M P/L
0 VSS
C6014M
4.7K
P/L
4.85
WF1
WF1-A +5V
5V
5V
SBF
20 MS
2O MS
R6037M
27K
VCC OUT
C6056M
C6017
C6016
10000PF
0.10UF
C6012M GND
25V
50V 2.2UF
IC6002
10000PF
221-1177A
25V
KIA7042
ALL SYMBOLS WITH "M" ON END OF DESIGNATOR
6-4
INDICATE SURFACE MOUNTED COMPONENT
9 10 11
R6082M
P/L
R6084M
C6067M
P/L
PROV
C Q6003
C6065M
B P/L
C6025M C6033M P/L
E
PROV PROV 50V
C6066
R6040M
PROV
C6064M
120
P/L
R6081M
50V
UP UP
PROV
C6057M
PROV
AUXSWITCH1
+5V
SBF
TP6005
R6048M
TP6006
+33V
4.7K 4.7K
ZD6001 C6032 C6031M
2200PF
33V
1UF
50V
+5V 103-279-36A
50V
TUNE
C6030 C6029M **J6000M
10000PF
P/L
**ONLY FOR 175-2771 TUNER
25V
+9V
C6090
SW PROV
L6000
C6070
P/L
CX6027 C6026M PROV
P/L P/L
OMIT FOR 175-2771 TUNER
C6028
4.7UF
R6039M 50V
220
R6072
WF5 10K
4.88V
1 US
R6050M
4
R6049 220 5
3
220 6
+5V
L6003
SBF 2
7
8 1
1UH
20-4129-8
C6021M
IC6001
D6001 C6020
10000PF
103-461A 4.7UF
25V
221-745-04
50V
12
VERT-SIZE
HORZ-SIZE
AUXSWITCH1
R+UP
AUD-SWITCH
G+UP
EXT-L
B+UP
EXT-R
FASTBLANK
IF
HALFTONE
PIPSWITCH1
FM/IF-OUT
R+UP
G+UP
B+UP
R6083M
P/L
FASTBLANK
AGC
VERT-SIZE
EXT-AUD
HORZ-SIZE
VOL-CTRL
COMP-AUD
PIPSWITCH1
VM-OUT-L
AUXSWITCH
VM-OUT-R
DEG-CTL
PWRCONT
IF
TU6000
175-2721 ZENITH TUNER
175-2771 LG TUNER
11
10
9
8
7
6
5
4
3
TP6010 2
TP6004
1
TUNNER
FACTORY
SETUP
4G9
+5V
5
SBF
4
3
2
1
58-526-05
CRT-PROTECTOR
SCL
SDA
Y/C-SENSE
VRAMP
COMP-VIDEO
SYNC
AFC
VERT-DRIVE
FLYBACK
CA SHEET 4