25" Video Ic Block Diagram - Zenith TVBR1342Z Service Manual

1 2
G
AT + 5V
P. CON + 5V
F
This schematic
applies to the
following model
only:
TVBR2542
E
TV VCR_POWER_H
CP1004
4 CTL
CAPSTAN
6 FG
DD UNIT
7 CAP/M/F/R
D CP1005
1 CYL PG
MICRO
MOTOR 3 CYL FG
5 CYL DRIVE
C
EOT SENSOR
Q1013
C. ROTARY
Y/C/AUDIO/
HEAD AMP/ DUMMY_V. SYNC
IN/OUT
INPUT_SEL
B
M101 CP101
LM LDM+
LOADING
MOTOR
LDM-
A
BOT
VCC
BOT SENSOR
Q101
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE SYMBOL
REPLACE ONLY WITH PART NUMBERS SPECIFIED.

25" Video IC Block Diagram

3 4
SW1001
TIMER SYSCON MICON IC
IC1001 OEC7043A
2 3
TAB SW
1 4 50
4 1 MSSEN-A
1
MS_SEN A
2 Q1009
3
4 2 MSSEN-B
1
MS_SEN B
Q1003
3
2
Q1002
SENSOR SW 23 SENS LED
1 3
80 REEL-T
REEL SENS.
Q1005
4
2
1 3 79 REEL-S
REEL SENS.
2 4
Q1001
27 VCR-POWER
CAP-PWM
76
CAP-FG
87
CAP-FWD
11
90 DRUM-PG
89
DRUM-FG
77 DRUM-PWM
D1003
Q1024
P. CON + 5V
LED DRIVER 68 CENTER LED
P. CON + 5V
3 EOT
15 COLOR ROTARY
13 DUMMY-V. SYNC
33 INPUT_SEL
LOADING MOTOR DRIVER IC
IC1003 BA6955N
CONTROL LOGIC
POWER
SAVE
STD
2 5 7 4
20 LDM-RVS
21 LDM-FWD
CP1006
4 4 LDM+
3 3 LDM-
2 2 BOT 4 BOT
1 1 VCC
P. CON + 5V
.
5 6
SYSTEM RESET IC
RESET-L 34 3 OUT IC1002
PST600H
POWER_FAIL_L
85
X-OUT (12MHz) 39
X1001
12MHz
X-IN (12MHz)
38
XC-OUT (32KHz)
36
X1002
32.768KHz
XC-IN (32MHz) 35
EXT_MUTE 26
CTL+ 95
CTL- 94
66
V-REC-ST-H
CVIN 56
VIDEO-H.SW 18
REC-H/EE-M/PB-L 61
DOC/XO-CTL 67
SP/LP/EP-H 83
TRICK_PB-H 69
ENV_DET 6
VCR_A_MUTE
81
IIC-DATA1 SDA EEP ROM IC
72 5
IC1099
IIC-CLK1 71 SCL
6 S-24C04BDP-LA
Q1004
97
CTL AMP-OUT
FF/REW_SW
FF/REW-L 73
R
64
G 63
B 62
AFT (MONI) 7
OSD OUT1
60
V-SYNC 59
H/C-SYNC 58
TV_A_MUTE 82
KEY A 9
POWER
TV-POWER 28 ON/OFF
KEY B 10
OS753
Q4204
X_RAY_TEST 41
1 2 3
TV POWER
SW
REMOCON-IN 14
Q4205
REC LED 30 REC LED SW
REC/OTR T-REC
D791
D793
Q4206
T-REC
T-REC LED 29
LED SW
5-8 P/L = See parts list for part description
7 8 9
POWER FAIL
Q1006
J701
AUDIO L
SW
3 4 FRONT_VIDEO
1 2 FRONT_AUDIO
VIDEO
EXT_MUTE
CTL+
CTL-
V. REC_ST_H
SD_VIDEO
H. SW
REC/EE/PB
DOC_XO_CTL
SP/LP/EP-H
TRICK_PB-H/EE-H
ENV_DET
VCR_A_MUTE
X_RAY_TEST
POWER_FALL_(DC)
SDA
SCL
OSD_R
OSD_G
OSD_B
AFT_M
OSD_BLK
VD
HD
TV_A_MUTE
TV_POWER-H
REC/OTR STOP/EJECT PLAY FF/CUE REW/REV
CH UP VOL. UP VOL. DOWN
CH DOWN
AT + 5.6V
POWER/PLAY
D792
PROV = Provisional
10
TV
Y/C/AUDIO/
HEAD AMP/
IN/OUT
TV
TVBR2000 SHEET 8