Sanyo HV-DX1E User manual

SERVICE MANUAL
DVD Player + Video Cassette
Recorder
FILE NO.
REFERENCE No.SM5310392
HV-DX1E
(Product Code : 143 187 02)
(U.K.)
KW4HV/E, EV, SP
CAUTION
This product utilizes a laser.
The adjustment other than those specified herein may result in hazardous radiation exposure.
HV-DX1EV
(Product Code : 143 187 03)
(Europe)
HV-DX1SP
(Product Code : 143 187 04)
PAL
(Spain)

CONTENTS
SECTION 1 . . . . SUMMARY
SECTION 2 . . . . CABINET & MAIN CHASSIS
SECTION 3 . . . . ELECTRICAL
SECTION 4 . . . . MECHANISM OF VCR PART
SECTION 6 . . . . REPLACEMENT PARTS LIST
SECTION 5 . . . . MECHANISM OF DVD PART

MECHANISM TROUBLESHOOTING GUIDE
4-23
Auto REW doesn't work.
Is the output of END sensor
of supply side "H"?
“H”: more than 3.5V
“L”: less than 0.7V~1V
Is the voltage across IR LED
between 0.8~1.5V? Replace LED.
Is the Vcc. voltage of End
sensor 5V? Check the syscon power.
Replace End sensor.
Check syscon circuit.
NO
YES
YES
YES
NO
NO
NO
1.Deck Mechanism
A.
NO
NO
NO
No F/R modes.
Is the present mode,
F/R Mode?
Is the mode SW assembled
correctly (refer to Pages 4-14.)
Is the normal voltage supplied to
the Capstan Motor Vcc1, Vcc2.?
Does terminal voltage(Vctl) of
Capstan Motor supply side
more than 4V?
Check Servo, Power Circuits.
Replace the Capstan Motor.
Does the Capstan Motor rotate?
Do the T/Up, Supply Reel
rotate?
Check syscon circuit.
YES
YES
YES
YES
YES
YES
B.

4-24
MECHANISM TROUBLESHOOTING GUIDE
AUTO STOP.
(PLAY/CUE/REV)
Are there T/up and supply reel
pulses.
In Play/Cue/Rev is the pinch
roller in contact with the capstan
shaft.
Replace Reel Sensor.
Is the output of DFG, DPG OK?
Check aligment positions (page 4-
14) Check spring Pinch.
Replace Drum Motor.
Check Servo, Syscon.
Check the Syscon, µ-COM.
No cassette loading.
Insert the cassette.
Check Holder Assembly CST.
Is there variation for CST IN S/W
Output?
(In Tape with REC Tab
“L”→“H”→“L”)
(In Tape without REC Tab
“L”→“H”→“L”→“H”)
Does the CST IN S/W work
normally?
Does the lever Assembly S/W
work normally.
Check Syscon Circuit. Check Syscon Circuit.
Replace CST IN S/W.
YES
YES
YES
YES YES
YES
NO
NO
NO
NO
NO NO
NO
YES
C.
D.

4-25
MECHANISM TROUBLESHOOTING GUIDE
In PB mode Tape Presence
not sensed.
Is the Pinch Roller attached
to the Capstan Motor Shaft?
Check Alignment positions
(page 4-14)
Does the T/Up
Reel turn? Replace the Belt.
Is the Belt ok?
Does the Drum
Motor turn?
Are there DPG,
DFG Pulses?
Are the T/Up Supply Reel Sensors
ok?
Check Syscon,
Circuit.
Check Syscon,
Circuit.
Check Servo, Syscon.
Does the Capstan Motor turn?
Is the terminal voltage of the
Drum Motor more than 2.3V?
Replace the
Drum Motor.
Is the Vcc voltage of the Drum
Motor normal?
Check the clutch and the Idler
Assembly.
YES
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
Is the terminal voltage of Capstan
Motor supplied more than 4V?
Replace the
Capstan Motor.
Is the Voltage supplied to the
Capstan Motor Vcc1,Vcc2 each?
YES
YES
YES
Check Servo,
Power.
NO
NO
NO
E.