Block Diagrams; Servo/System Control Block Diagram - Hitachi DV-PF2U Service Manual

BLOCK DIAGRAMS < VCR SECTION >

Servo/System Control Block Diagram

(DECK ASSEMBLY)
AC HEAD ASSEMBLY
CONTROL CTL(+)
HEAD
CTL(-)
CYLINDER ASSEMBLY
PG
SENSOR
DRUM
M
MOTOR
M
LOADING
MOTOR
MAIN CBA
IC301 (Y/C PROCESS)
CONTROL
AMP
D555
TP303
S-LED
CTL
18
9 23 19
CL504
5
6
SW507
LD-SW
TP506
ST-S
Q504
ST-S
SENSOR CBA
Q503
END-S
TP507
SENSOR CBA
END-S
CAPSTAN MOTOR
CL502
1 C-F/R
CAPSTAN
M
2 AL+12V
MOTOR
3 AL+12V
4 P-ON+5V
5 GND
6 C-FG
7 C-CONT
8 GND
9 D-FG
10 LM-FWD/REV
11 D-CONT
12 D-PG
IC501
(SERVO/SYSTEM CONTROL)
TO DVD
SYSTEM CONTROL
REMOTE1
BLOCK DIAGRAM 1 REMOTE
<DVD SECTION>
AL+5V
AL+5V 25 REC-SW
SW506
REC SW
54 PB-CTL
20 REC-CTL(-)
19 REC-CTL(+)
TP510
MODE-SW
AL+5V
74 LD-SW
TP505
T-REEL
75 ST-S
68 END-S
49 T-REEL
Q506
Q501
T-REEL
TIMER+5V RESET 34 RESET
AL+5V
VR501
71 PG-DELAY
SW-POINT
48 C-F/R
AL+12V
AL+12V
P-ON+5V
51 C-FG
55 C-CONT
52 D-FG
59 LM-FWD/REV
56 D-CONT
53 D-PG
TP502
S-INH
KEY
KEY 1 72
SWITCH
KEY 2 73
VCR LED 89
VCR LED 90 CN505
CAS-IN LED 87 2 KEY 2
CAS-IN LED 88 3 VCR LED
TIMER LED 84 4 CAS-IN LED
TIMER LED 85 5 TIMER LED
P-ON+5V 6 P-ON LED
REC LED 82
REC LED 83
DVD-L 91
DVD-L 92
DVD-H 93
DVD-H 94
I2C-BUS-CLK
10
I2C-BUS-DATA 9
SERIAL-CLK 11
SERIAL-DATA 12
Hi-Fi-H-SW 18
Hi-Fi-CS 8
Hi-Fi/NOR-IN 65
ST/SAP-IN 67
A-MUTE 13
D-REC-H 62
D-PB-H 61
OUTPUT SELECT 100
INSEL/ST-SL 7
C-SYNC 21
D-V SYNC 33
V-ENV 70
C-ROTA 15
RF-SW 17
TRICK-H 47
SP/LP/SLP 45
BLUEBACK-ON 66
H-A-SW 16
H-A-COMP 14
JACK CBA
KEY SWITCH
CN651
2
D652
VCR
3
4 D653 CAS
5
D654 TIMER
6
D655 POWER
D656 REC
D588 VCR
D589 DVD
TU701
11 CLOCK
12 DATA
SERIAL-CLK
SERIAL-DATA
Hi-Fi-H-SW
TO Hi-Fi
Hi-Fi-CS
AUDIO BLOCK
Hi-Fi/NOR-IN
DIAGRAM
ST/SAP-IN
A-MUTE
A-MUTE
D-REC-H
TO AUDIO
D-PB-H BLOCK
DIAGRAM
OUTPUT SELECT
D-REC-H
D-PB-H
OUTPUT SELECT
INSEL/ST-SL
C-SYNC
D-V SYNC
TO VIDEO
V-ENV
BLOCK
C-ROTA
DIAGRAM
RF-SW
TRICK-H
SP/LP/SLP
BLUEBACK-ON
H-A-SW
H-A-COMP
4-2-1