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.

MECHANISM TROUBLESHOOTING GUIDE
4-26
Cassette cannot be inserted.
Does the Lever Assembly
Switch work?
Is the Lever Assembly Switch
Spring damaged or omitted?
Does the CST IN Switch work
normally?
Replace or add the Lever
Assembly Switch Spring.
Is the Vcc of Main P.C.Board
5V?
YES
YES
Check syscon circuit.
YES
Check power circuit.
NO
Is the voltage between cassette
switch and GND on Main
P.C.Board 5V??
YES
Is there a short circuit between cassette
switch and GND on main P.C.Board?
Remove the short circuit part or
Replace the main P.C.Board.
NO
Check Mode switch location and
syscon circuit.
Replace CST IN Switch.
YES
NO
YES
NO NO
Replace CST IN Switch.
NO
NO
Cassette will not eject.
Does the L/D motor rotate in reverse? Check L/D Motor or Drive IC.
Replace lever Assembly Switch.
Does the Lever Assembly Switch work?
YES
NO
NO
Does the Arm Assembly F/L work normally?
YES
NO
Does the Opener Door work?
YES
Replace Arm Assembly F/L.
Replace the Opener Door.
2. Front Loading Mechanism
A.
B.

MECHANISM TROUBLESHOOTING GUIDE
4-27
Cassette will not load.
Does the CST insert?
Does the opener Lid work?
Is the opener Door assembled correctly?
Replace the Opener Lid.
Replace the Arm Assembly F/L.
Check the power of L/D Motor.
Is the Holder Assembly Cassette
assembled correctly?
Replace the Rear Rack F/L.
Does the Gear Rack F/L work?
Does the Opener Door work?
Does the Arm Assembly F/L work?
Does the L/D Motor work?
Does the Holder Assembly Cassette
move the Arm Assembly F/L?
Replace the Front Loading
Mechanism Assembly.
YES
YES
YES
YES
NO
NO
NO
YES NO
YES NO
YES NO
C.

4-28
EXPLODED VIEWS
117
103
105 117
100
106
107
A21
114
113
112
110
115
A24
116
102
A23
032
A22
109
054
054A
1. Front Loading Mechanism Section

EXPLODED VIEWS
4-29
401
402
001
008
011
031
079
017
032
024
406
020
021
028
019
018
029
030
026
A03
A04
A01
002
002A
025
027
022
003
004
006
007
010
405
014
015
009
409
013
023 016
405
012
402
OPTIONAL PART
2. Moving Mechanism Section(1)

EXPLODED VIEWS
4-30
051
052
517
061
056
058
518 052A
055
060
410
070
069
076
032
077
068
064
066
065
067
A11
078
A12
3. Moving Mechanism Section(2)

SECTION 3
ELECTRICAL
CONTENTS
OVERALL BLOCK DIAGRAM ...................................................................................................................................3-1
VCR PART
ELECTRICAL ADJUSTMENT PROCEDURES.......................................................................................................3-2
ELECTRICAL TROUBLESHOOTING GUIDE ......................................................................................................3-3
1. POWER(SMPS) CIRCUIT............................................................................................................................................3-3
2. SYSTEM/KEY CIRCUIT ...............................................................................................................................................3-7
3. SERVO CIRCUIT..........................................................................................................................................................3-8
4. Y/C CIRCUIT ..............................................................................................................................................................3-11
5. Hi-Fi CIRCUIT ............................................................................................................................................................3-15
6. Tuner/IF CIRCUIT ......................................................................................................................................................3-18
BLOCK DIAGRAMS.....................................................................................................................................................3-20
1. Power (SMPS) BLOCK DIAGRAM ...........................................................................................................................3-20
2. TU/IF, NICAM & A2 BLOCK DIAGRAM ....................................................................................................................3-22
3. VPS BLOCK DIAGRAM ............................................................................................................................................3-23
4. Y/C BLOCK DIAGRAM..............................................................................................................................................3-24
5. Hi-Fi BLOCK DIAGRAM............................................................................................................................................3-26
6. SYSTEM BLOCK DIAGRAM.....................................................................................................................................3-28
CIRCUIT DIAGRAMS ..................................................................................................................................................3-30
1. Power (SMPS) CIRCUIT DIAGRAM .........................................................................................................................3-30
2. TU/IF, NICAM & A2 CIRCUIT DIAGRAM ..................................................................................................................3-32
3. A/V CIRCUIT DIAGRAM ............................................................................................................................................3-34
4. Hi-Fi CIRCUIT DIAGRAM..........................................................................................................................................3-36
5. SCART(JACK) CIRCUIT DIAGRAM .........................................................................................................................3-38
6. SYSTEM CIRCUIT DIAGRAM ...................................................................................................................................3-40
•WAVEFORMS ..............................................................................................................................................................3-42
•CIRCUIT VOLTAGE CHART .......................................................................................................................................3-44
PRINTED CIRCUIT DIAGRAMS..............................................................................................................................3-48
1. MAIN P.C.BOARD......................................................................................................................................................3-48
2. KEY P.C.BOARD........................................................................................................................................................3-50
3. CLOCK P.C.BOARD ..................................................................................................................................................3-50
DVD PART
ELECTRICAL TROUBLESHOOTING GUIDE ....................................................................................................3-52
1. µ-COM CIRCUIT ........................................................................................................................................................3-52
2. MPEG CIRCUIT .........................................................................................................................................................3-55
3. RF/Servo CIRCUIT ....................................................................................................................................................3-56
BLOCK DIAGRAMS.....................................................................................................................................................3-60
1. DVD Overall BLOCK DIAGRAM...............................................................................................................................3-60
2. RF/CD DSP/DVD DSP/DVD SERVO BLOCK DIAGRAM.........................................................................................3-61
3. Audio BLOCK DIAGRAM..........................................................................................................................................3-62
4. MPEG BLOCK DIAGRAM .........................................................................................................................................3-63
CIRCUIT DIAGRAMS ..................................................................................................................................................3-64
1. DVD DSP CIRCUIT DIAGRAM..................................................................................................................................3-64
2. DRIVE & RF CIRCUIT DIAGRAM .............................................................................................................................3-66
3. MPEG CIRCUIT DIAGRAM .......................................................................................................................................3-68
4. Audio DM CIRCUIT DIAGRAM .................................................................................................................................3-70
5. MEMORY CIRCUIT DIAGRAM..................................................................................................................................3-72
6. SCART(JACK) CIRCUIT DIAGRAM .........................................................................................................................3-74
•WAVEFORMS ..............................................................................................................................................................3-76
•CIRCUIT VOLTAGE CHART .......................................................................................................................................3-78
PRINTED CIRCUIT DIAGRAMS..............................................................................................................................3-82
1. MAIN P.C.BOARD (TOP VIEW).................................................................................................................................3-83
1. MAIN P.C.BOARD (BOTTOM VIEW) ........................................................................................................................3-84

OVERALL WIRING DIAGRAM
3-1
PMC01
CFG
12VA(CAP)
5.2VA
CAP REV'H'
I-limit
MOTOR GND
GND
12VA(DRUM)
CAP CTL
LD IN
DFG/FG
DRUM CTL
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
PMD02
Vcc(HF)
RF
DVD_LD
DVD_PD
VOL(DVD)
GND
VC_INPUT
Vcc(HF)
F
E A
D C
B
F(+)
T(-)
T(+)
F(-)
Vcc
GND
CD_LD
CD_PD
VOL(CD)
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20 21 22 23
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20 21 22 23
PM601
GND
FLD CLK
FLD ENA
FLD DATA
REMOCON
KEY RETURN KEY RETURN
5.3VA
FD(-)
FD(+)
-27VA
GND
1 2 3 4 5 6 7 8 9
10
11
12
1 2 3 4 5 6 7 8 9
10
11
12
PM602
VIDEO IN
GND
AUDIO L
GND
AUDIO R
1 2 3 4 5
1 2 3 4 5
PMD03
CLOSE_SW
FM+
OPEN_SW
LM+
LM-
FM-
GND
A1 A3 A2
VH+
H3+
LIMIT_SW
GND
H3-
H2+
H2-
H1+
H1-
VH-
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20
1 2 3 4 5 6 7 8 9
10
11
12 13 14 15 16 17 18 19 20
P3D02
CTL(+)
CTL(-)
A/E(+)
A/E(-)
A.REC
A.PB
1
2
3
4
5
6
1
2
3
4
5
6
GND
FULL ERASE
P3D03
1
2
1
2
DVD V.IN
GND
DVD A.IN'L'
GND
DVD A.IN'R'
GND
DVD RESET
DVD ENA
DVD CLK
DVD DATA IN
DVD DATA OUT
GND
DVD G
DVD B
DVD R
GND
A.out R
A.out L
PVD02P8D01
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
5.3VA
8VA
GND(M)
REG12V
3.3V
3.3V
5V
5V
GND
2.5V
GND
GND
PVD01P1D01
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
AUDIO "R"
AUDIO "L"
5.3VA
KEY RETURN L
DVD LED
VCR LED
VIDEO IN
GND
PM602PM603
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
DECK MD
MPEG
BOARD
TIMER
BOARD
KEY BOARD
VCR

3-2
ELECTRICAL ADJUSTMENT PROCEDURES
1. Servo Adjustment
1) PG Adjustment
•Test Equipment
•Adjustment And Specification
a) OSCILLOSCOPE
b) NTSC MODEL : NTSC SP TEST TAPE
C) PAL MODEL : PAL SP TEST TAPE
MODE
PLAY
•Adjustment Procedure
a) Insert the SP Test Tape and play.
Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the “ATR”is blink after the
SP Test Tape is inserted.
b) Connect the CH1 of the oscilloscope to the H/SW(W373, W374) and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW(W373, W374), and then check the dis-
tance (time difference), which is from the selected A(B) Head point of the H/SW(W373, W374) signal to
the starting point of the vertical synchronized signal, to 6.5H ± 0.5H (412µs, 1H=63µs).
•PG Adjustment Method
a-1) Payback the SP standard tape
b-2) Press the “1”key on the Remote controller and the “PLAY”key on the Front Panel the same time,
then it goes in to Tracking initial mode. (Note: NTSC Model : “1”key and PAL Model “0”key on
Remote controller)
c-3) Repeat the above step(No.b-2), then it finishes the PG adjusting automatically.
d-4) Stop the playback, then it goes out to PG adjusting mode after mony the PG data.
•CONNECTION
•WAVEFORM
V.Out
H/SW(W373, W374) R/C TRK JIG KEY 6.5 ± 0.5H
MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION
V.Out
H/SW(W373,W374)
OSCILLOSCOPE
CH1 CH2
V.out
H/SW
R/C KEY
(W373, W374)
H/SW
Composite
VIDEO
6.5H(416us)
VCR PART

3-3
ELECTRICAL TROUBLESHOOTING GUIDE
1. Power(SMPS) CIRCUIT
NO 5.3VA.
Replace the F101.
(Use the same Fuse)
Is the F101 normal?
Is the R101
normal?
Is the BD101
normal?
NO
NO
NO
NO
NO
NO
Replace the
BD101.
Replace the R101.
Is the D102
normal?
Check or Replace
the D102.
Replace the D112.
Replace the IC102.
YES
YES
YES
YES
YES
YES
YES
Is Vcc(8.5~21V) sup-
plied to IC101 Pin7?
NO
Is the D112 normal?
Is there about 2.5V
at the IC102 Vref?
Check the Main PCB
5.3VA/5.0V Line short?
(1) No 5.3VA (SYS/Hi-Fi/TUNER)
NO 12VA.
Check or Replace
the D110.
Is the Vcc(13V) supplied to (+)
terminal in D115 and D117?
Check or Replace
the Motor Vcc.
Is the Vcc(12V) supplied to (-)
terminal in D115 and D117?
NO
NO Replace the D115,
D117.
YES
YES
YES
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.2VA.
5.3VA Line Check.
Is 5.3VA put into
the Q116 Emitter?
Is about 5V put into
the Q116 Base?
Is the Q115 Base
“H”?
NO
NO Check the Power
Control.
NO
Check or Replace the Q115,
R160, R161, R162, D122.
YES
YES
YES
Check or Replace
the Q115/Q116
YES
(3) No 5.2V (SYS/Hi-Fi/TUNER)

3-4
NO 5V.
5.3VA Line Check.
Is 5.3VA put into
the Q113 Emitter?
Is about 5V put into
the Q113 Base?
Is the Q115 Base
“H”?
NO
NO
NO
Check the Power
Control.
Check or Replace the Q115,
R157, R158, R159, D121.
YES
YES
YES
YES
Check or Replace
the Q113/Q115
(4) No 5V (TO DVD)
No 5.2VT.
5.3VA Line Check.
Is 5.3VA put into the
Q117 Collector?
Check or Replace the Q117,
R172, ZD105, C162.
Is 5.6V put into the
Q117 Base?
NO
NO Check 33V Line.
YES
YES
Check the Timer
control.
Is the Q118 Base
“H”?
NO
YES
YES
(5) No REG 5VT (SYS/AVCP/TU/CANAL)
No 33VT.
Check the Power
Control.
Is Q115 Base “H”?
Check or Replace
Q114, R154, R155.
NO
YES
YES
(6) No 33VT (TUNER)
No REG 12VT.
Check or Replace
D110.
Is 13V put into the
Q112 Collector?
Is 12.6V put into the
Q112 Base?
NO
Check 33V Line.
NO
YES
YES
Check the Timer
control.
Is the Q118 Base
“H”?
NO
YES
Check or Replace the Q112,
ZD103, R153, C151.
YES
(7) No REG 12VT

3-5
NO -27VA.
Check or Replace
D108.
YES
(8) No -27VA
NO 8VA.
Check or Replace
the D110.
Is Vcc(13V) supplied to
(+) terminal in D114?
Is the Q115 Base
“H”?
Is Vcc(12V) supplied
to IC106 Pin1?
NO
NO Check or Replace
the D114.
NO Check the Power
Control.
YES
YES
YES
Check or Replace
IC106, R170, C154.
YES
(9) No 8VA
NO 3.3VA.
Is Vcc(4V) supplied
to IC103 Pin1?
YES
Is the Q115 Base
“H”?
YES
Check or Replace
IC103, R156, C153.
YES
(10) No 3.3V
Check or Replace
the D111.
NO
NO Check the Power
Control.
NO 2.5VA.
Is Vcc(4V) supplied
to IC104 Pin1?
YES
Is the Q115 Base
“H”?
YES
Is Vcc(3.3V) supplied
to IC104 Pin2?
YES
Check or Replace
D119, C159.
YES
(11) No 2.5V
Check or Replace
the D111.
NO
NO Check the Power
Control.
NO Check or Replace
the IC104.

3-6
2. SYSTEM/KEY CIRCUIT
(1) AUTO STOP
(2) The unstable loading of a Cassette tape
Auto Stop
Does the SW25 waveform
appear at the IC501
Pin105?
Do the T-UP Reel Pulses
appear at the IC501 Pin49?
Is 12V applied to the
PMC01 Pin8?
Check the Drum Motor
signal.
Does 5.2V appear at the
RS501?
Check the Power Circuit.
Check the Power.
Is 5.3V applied to the
R544 ?
Refer to SMPS 5.3VA
troubleshooting.
Check the IC501
Pins68, 69, 70, 71.
Do T/UP Reel Pulses
appear at the Q514
Base terminal ?
Replace the T/UP Reel
Sensor (RS501).
Check the CST SW and
the peripheral circuitry.
Replace the IC501.
The unstable loading of a
Cassette tape
Does the “H” signal appear
at the IC501 Pin30 during
inserting the CST ?
Does the “L” signal appear
at the IC501 Pin72 during
inserting the CST?
Check the Deck
Mechanism.
Caution : Auto stop can occur because Grease or Oil is dried up
YES
YES
YES NO
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO NO
YES
YES YES

3-7
3. SERVO CIRCUIT
(1) Unstable Video in PB MODE
Unstable Video in
PB Mode.
Does the Noise level of the
screen change
periodically?
Do the CTL pulses appear
at the IC501 Pin8?
Is adjusting the height of
the CTL Head accurate?
Readjust the height of the
CTL Head.
Replace the IC501.
Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.
Does the CFG waveform
appear at the IC501
Pin9?
On tracking do the CTL
pulses move?
Does the Video Envelope
waveform appear at the
IC501 Pin24?
Replace the IC501.
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
(2) When the Drum Motor
(2) doesn’t run. Do the DFG Pulses appear
at the PMC01 Pin11?
Replace the Cap M.
Aren’t the foil patterns and
the Components between
IC501 Pin104 and PMC01
Pin11 short?
Replace the IC501.
Refer to “(2)
No 12VA of Power section”
Do the Drum PWM Pulses
appear at the IC501
Pin107?
Aren’t the foil patterns and
the Components between
IC501 Pin107 and PMC01
Pin12 short?
Do the DFG Pulses appear
at the IC501 Pin104?
Do the Drum PWM Pulses
appear at the IC501
Pin107?
Aren’t the connecting patterns and the Components
between IC501 Pin107 and PMC01 Pin12 short?
When the Drum Motor
doesn’t run,
Does 12V appear at the
PMC01 Pin8?
Does 2.8V appear at the
PMC01 Pin12?
Check the connector
(PMC01) and the Drum
Motor Ass’y.
NO
YES
YES
YES
NO
NO
NO
NO
NO
YES
YES
YES

3-8
Does the CFG signal appear at the
PMC01 Pin1?
Does the PWM signal appear at the
IC501 Pin108?
Does 2.8V appear at the PMC01?
Check the PMC01 and the Capstan
Motor Ass’y.
Does the Capstan PWM signal appear at
the IC501 Pin108?
Aren’t the foil patterns and Components
between IC501 Pin108 and PMC01
Pin9 short?
Does the CFG signal come into the
IC501 Pin9?
Aren’t the foil patterns and Components
between IC501 Pin108 and PMC01
Pin9 short?
2. SERVO CIRCUIT
(3) When the Capstan Motor doesn’t run,
NO
NO
NO
YES
YES
YES
When the Capstan Motor doesn’t run,
Does 12VA appear at the PMC01?
YES
Replace the IC501.
YES
NO
NO
YES
Refer to “SMPS(CAPSTAN/12Volt)
Trouble Shooting”.
Aren’t the foil patterns and component
between IC501 Pin9 and PMC01
Pin1 short?
Check the Capstan Motor Ass’y.
NO

3-9
(4) KEY doesn’t working
KEY doesn’t working.
Is 5V applied to the IC501
Pin36?
Does LED or FLD change
when a function button is
pressed?
Refer to “SMPS 5.3VA
Trouble Shooting”.
Replace the defective
switches.
YES
NO
NO