FUNAI 29B-250, Service Manual

Page: 14 / 79

BLOCK DIAGRAMS
Servo/System Control Block Diagram
HG242BLS 1-7-1
CN504
CTL AMP OUT
97
SENSOR CBA SENSOR CBA
END-S
ST-S
Q504 Q505
CONTR
OL
HEAD
AC HEAD ASSEMBLY
(DECK ASSEMBLY)
TP501
CTL
Comparison Char
t of
Models & Marks
Model
Mark
29B-250 29B-750
A B
M
M
LOADING MOTOR
CAPSTAN MOTOR
MAIN CBA
KEY- 2
C-CONT C-FG D-PFG ST-S T-REEL C-F/R
KEY- 1
REMOCON-IN CTL(+) RESET REC-SAF-SW PG-DELAY CTL(-)
D-V-SYNC
D-REC-H
RF-SW
H-A-SW
C-ROTA
END-S
14 90 87 94 95 76 10
4
80 34 78
2
13 15 18 33 16
31
8 7
RS501
REMO
TE
SENSOR
LM-FWD/REV
81
D-CONT
77
T-REEL
Q501
RESET
Q503
S-REEL
79
SW-POINT
AL+5V
VR501
TIMER+5V
S-REEL
PS503
TP506
IIC-BUS SDA IIC-BUS SDA
IIC-BUS SCL
A-MUTE-H
IIC-BUS SDA
IIC-BUS SCL
Hi-Fi-H-SW
A-MODE
A-MUTE-H
Hi-Fi-H-SW
A-MODE
H-A-COMP
17
V-ENV
6
P-ON-H C-POW-SW
P-ON-H C-POW-SW P-DOWN-L
67 66 86
P-DOWN-L
C-SYNC
58
SW506
TO VIDEO BLOCK TO Hi-Fi AUDIO BLOCK TO AUDIO BLOCK
SDA SDA SCL SCL
TU701(TUNER UNIT) IC503
(MEMORY)
72 32 19 83
IIC-BUS SCL
D-V-SYNC
D-REC-H
RF-SW
H-A-SW
C-ROTA
IIC-BUS SDA
H-A-COMP
V-ENV
C-SYNC
IIC-BUS SCL
71
3 5
SDA SCL
12 11
LD-SW
9
AL+12V/+20.5V
P-ON+15V
AL+5V
AL+5V
SW507
AL+12V
P-ON+5V
LD-SW
AL+5V
D502 S-LED
TO POWER SUPPLY BLOCK
LINE-MUTE
KEY SWITCH
KEY SWITCH
TP507 SENS-INH
CAPSTAN MOTOR
IC561
A
(LED DISPLAY)
IC501 (SERVO/SYSTEM CONTROL)
DRV-DATA DRV-STB DRV-CLK
DRV-DATA
DRV-STB DRV-CLK
FP562
LED DISPLAY
D1 D2 D3 D4
a
f j
b c d
23 22 21
28
2 1
68 69 70
20 11 16 14 13
e
12 17
7
AUDIO-SW-2
AUDIO-SW-2
30
AUDIO-SW-1
AUDIO-SW-1
29
LINE-MUTE
28
5 6
CN502
12
P-ON+15V
11
AL+12V(2)
10
GND
9
D-PFG
8
D-CONT
7
LM-FWD/REV
6
GND
5
C-CONT
4
C-F/R
3
C-FG
2
P-ON+5V
1
AL+12V/+20.5V
REC-SAFETY
END-S
Q562 Q563 Q564 Q565
CAS-LED TIMER-LED REC-LED POWER-LED
+5V
B B A
B
26 25 24 23
2
CTL(+)
1
CTL(-)
D565
REC
D564
TIMER
D563
CAS
D562
PO
WER
D561
ST
AND-BY
CYLINDER ASSEMBLY
DRUM MOTOR
PG SENSOR
M