This is the 123 pages manual for Hitachi DVPF 7 E Service Manual. Read or download the pdf for free.
If you want to contribute, please mail your pdfs to info@audioservicemanuals.com.
Page: 1 / 123
Extracted text from Hitachi DVPF 7 E Service Manual (Ocr-read)
1-1
Drive Mecha Assembly
Laser Beam Radiation
Laser Pickup
Turntable
1-1 LASER BEAM SAFETY PRECAUTIONS
This DVD player uses a pickup that emits a laser beam.
The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to
keep your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the
laser beam.
Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in
hazardous radiation exposure.Do not look directly at the laser beam coming
from the pickup or allow it to strike against
your skin.
CAUTION FOR SAFETY IN PERFORMING REPAIR 1
Page 114
B-1
B-1 Servo / System Control Block Diagram
B BLOCK DIAGRAMS
M
LOADING
MOTOR
CAPSTAN MOTOR
CONTROL
HEAD AC HEAD
ASSEMBLYMAIN CBA
KEY- 1
ST-S
T-REEL
REMOTE-VIDEOCTL(+)
RESET
REC-SAF-SW PG-DELAYCTL(-)
D-V-SYNCD-REC-HDAVN-L
RF-SW
H-A-SW C-ROTA END-S
14 9495 10480 34 2
1315183356 16
31
7
(DECK ASSEMBLY)
T-REELQ515
RESET Q506
S-REEL79
SW-POINT
AL+5V
VR501 TIMER+5V
S-REEL PS502
TP502
KEY- 2
8
IIC-BUS SDA IIC-BUS SDA
IIC-BUS SCL
A-MUTE-H
IIC-BUS SDA
IIC-BUS SCL
Hi-Fi-H-SW
A-MODE
OUTPUT SELECT
OUTPUT SELECT 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 6766 86P-DOWN-L
OUTPUT-SELECT
SW506
TO VIDEO
BLOCK DIAGRAM TO Hi-Fi AUDIO
BLOCK DIAGRAM TO AUDIO
BLOCK DIAGRAM
11KEY-1 CN509 CN508
POWER SW CBA
SDA
SCL IC502 (MEMORY)
72 3219 83
IIC-BUS SCL
D-V-SYNCD-REC-HDAVN-L
RF-SW
H-A-SW C-ROTA IIC-BUS SDA
H-A-COMP
V-ENV
DVD-POWER
58
C-SYNC
C-SYNC
OUTPUT-SELECT IIC-BUS SCL
71
LD-SW
REMOTE-VIDEO9
AL+5V
AL+5V SW507
LD-SW AL+5V
D555
S-LED
TO POWER
SUPPLY BLOCK
DIAGRAMTP501
SENS-INH
IC501
(SERVO/SYSTEM CONTROL)
LINE-MUTE
LINE-MUTE
28
56
SENSOR CBA SENSOR CBA
END-SST-S Q504
Q503
REC-SAFETY
END-S
CTL97
TP503
CTL
82
SW651POWER
TO DVD SYSTEM
CONTROL BLOCK
DIAGRAM
TO DVD SYSTEM
CONTROL BLOCK
DIAGRAM
TO DVD
VIDEO/AUDIO
BLOCK DIAGRAM
CN502
C-FG
C-CONT
D-PFG C-F/R
90 76 8778 LM-FWD/REV81D-CONT77
AL+20.5V/+12V AL+12V(2) P-ON+15V P-ON+5V
1AL+20.5V/+12V2P-ON+5V3C-FG4C-F/R5C-CONT6GND7LM-FWD/REV8D-CONT9D-PFG10GND11AL+12V(2)12P-ON+15V
DRV-DATA
DRV-STB DRV-CLK
DISPLAY-DATA
DISPLAY-STB DISPLAY-CLK6869
21
70
DVD-LED
VCR-LED
Q508
Q509
29 30
D503
VCR D502 DVD AL+5V
REC-LED
Q511
26
D504
REC
TIMER-LED
Q502
25
D501
TIMER
KEY SWITCH
KEY SWITCH
CN504
CL5042 CTL(+)1 CTL(-)
DVD-POWER
CYLINDER ASSEMBLY DRUM
MOTORPG
SENSOR
M
M CAPSTAN
MOTOR
MOTOR
DRIVE
CIRCUIT
65
TRICK-H
61
SECAM-HTRICK-H
SECAM-H
OUTPUT-SELECT