JVC HRXV-11-E, HRXV-2-E Service manual

SERVICE MANUAL

DVD PLAYER /VIDEO CASSETTE RECORDER

HR-XV2EX, HR-XV2EY,

HR-XV2EL, HR-XV11E

POWER

VCR DVD

TV

DVD MENU MEMORY

SEARCH

EJECT

SUBTITLE ANGLE

RETURN

DISPLAY

REPEAT

REPEAT A-B ZOOM

TITLE

SHOWVIEW

123

VIDEO Plus+

456
7089

TV

TV

TV/VCR

TV/VCR PR +

OK

0000

CANCEL

M

RANDO

TV/VCR PR

AUX

A

UD

I
O

G.
O

PR

MONITOR

SPECIFICATIONS

General

Power requirements AC 200-240V, 50/60 Hz
Power consumption Operation mode : 23W

Dimensions (approx.) 430 X 97.5 X 293 mm (w/h/d)
Mass (approx. .8 kg

)4
Operating temperatur ˚C to 35˚C (41˚F to 95˚F)
Operating humidity 5 % to 90 %
Timer 24 hours display tape
Program capacity 1 month 7 program
RF Modulator UHF 22-68 (Adjustable)

System

Laser Semiconductor laser, wavelength 650 nm
Video Head system Double azimuth 4 heads, helical scanning.
Signal system PAL
Frequency response DVD (PCM 96 kHz): 8 Hz to 44 kHz

Signal-to-noise ratio More than 100dB (ANALOG OUT connectors only)
Harmonic distortion Less than 0.008%
Dynamic range More than 100 dB (DVD)

Standby mode : 6.7W

e5

DVD (PCM 48 kHz): 8 Hz to 22 kHz
CD: 8 Hz to 20 kHz

More than 95 dB (CD)

(The specifications shown pertain specifically to the model HR-XV2E.)

X

PAL

R

Inputs (VCR)

o-

Audi 6.0dBm, more than 10 kohms (SCART)

Video 1.0 Vp-p, 75 ohms, unbalanced (SCART/RCA)

Outputs (DVD)

S-VIDEO OUT (Y) 1.0 Vp-p 75 ohms, negative sync., Mini Din 4-pin x 1

COMPONENT VIDEO OUT (Y) 1.0 V (p-p), 75 , negative sync, RCA jack x 1

Audio output (digital audio) 0.5 V (p-p), 75 ΩΩ, RCA jack x 1
Audio output (optical audio) 5 V (p-p), 75 , Optical connector x 1
Audio output (analog audio) 2.0 Vrms (1 kHz, 0 dB), 330 , RCA jack (L, R) x 2/SCART(TO TV)

Outputs (VCR)

o-

Audi 6.0dBm, less than 1 kohms (SCART)
Video 1.0Vp-p, 75 ohms, unbalanced (SCART)

Design and specifications are subject to change without notice.

Manufactured under license from Dolby Laboratories. “ Dolby” and double-D symbol are trademarks of
Dolby Laboratories. Confidential Unpublished Works. ©1992-1997 Dolby Laboratories, Inc. All rights reserved.

Manufactured under license from Digital Theater Systems, Inc. US Pat. No. 5,451,942 and other world-wide patents issued and
pending. “ DTS” and “ DTS Digital Out” are trademarks of Digital Theater Systems, Inc. Copyright 1996 Digital Theater Systems, Inc.
All rights reserved.

-6.0dBm, more than 47 kohms (RCA)

(C) 0.3 Vp-p 75 ohms

(Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 2

HR-XV2EX,HR-XV2EY,HR-XV2EL,HR-XV11EX D2VP11

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD

No.82984

2003/06

CONTENTS

SECTION 1 . . . . SUMMARY

SECTION 3 . . . . ELECTRICAL

SECTION 4 . . . . MECHANISM OF VCR PART

SECTION 5 . . . . MECHANISM OF DVD PART

SECTION 6 . . . . REPLACEMENT PARTS LIST

SECTION 1

SUMMARY

CONTENTS

Important Safety Precautions

SPECIFICATIONS ................................................................................................... 1-5

Important Safety Precautions

Connector

Metal sleeve

Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes
of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the
following precautions when a set is being serviced.

v

Precautions during Servicing

1. Locations requiring special caution are denoted by labels and
inscriptions on the cabinet, chassis and certain parts of the
product. When performing service, be sure to read and com­ply with these and other cautionary notices appearing in the
operation and service manuals.

2. Parts identified by the symbol and shaded ( ) parts are
critical for safety.
Replace only with specified part numbers.

Note: Parts in this category also include those specified to com-

ply with X-ray emission standards for products using
cathode ray tubes and those specified for compliance
with various regulations regarding spurious radiation
emission.

3. Fuse replacement caution notice.
Caution for continued protection against fire hazard.
Replace only with same type and rated fuse(s) as specified.

4. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads

5. Use specified insulating materials for hazardous live parts.
Note especially:

1) Insulation Tape 3) Spacers 5) Barrier

2) PVC tubing 4) Insulation sheets for transistors

6. When replacing AC primary side components (transformers,
power cords, noise blocking capacitors, etc.) wrap ends of
wires securely about the terminals before soldering.

12. Crimp type wire connector
In such cases as when replacing the power transformer in sets
where the connections between the power cord and power
transformer primary lead wires are performed using crimp type
connectors, if replacing the connectors is unavoidable, in or­der to prevent safety hazards, perform carefully and precisely
according to the following steps.

1) Connector part number : E03830-001

2) Required tool : Connector crimping tool of the proper type

which will not damage insulated parts.

3) Replacement procedure

(1) Remove the old connector by cutting the wires at a point

close to the connector.
Important : Do not reuse a connector (discard it).

cut close to connector

Fig.3

(2) Strip about 15 mm of the insulation from the ends of

the wires. If the wires are stranded, twist the strands to
avoid frayed conductors.

15 mm

7. Observe that wires do not contact heat producing parts

8. Check that replaced wires do not contact sharp edged or

9. When a power cord has been replaced, check that 10-15 kg of

10. Also check areas surrounding repaired locations.

11. Products using cathode ray tubes (CRTs)

Fig.1

(heatsinks, oxide metal film resistors, fusible resistors, etc.)

pointed parts.

force in any direction will not loosen it.

Power cord

Fig.2

In regard to such products, the cathode ray tubes themselves,
the high voltage circuits, and related circuits are specified for
compliance with recognized codes pertaining to X-ray emission.
Consequently, when servicing these products, replace the cath­ode ray tubes and other parts with only the specified parts.
Under no circumstances attempt to modify these circuits.
Unauthorized modification can increase the high voltage value
and cause X-ray emission from the cathode ray tube.

Fig.4

(3) Align the lengths of the wires to be connected. Insert

the wires fully into the connector.

Fig.5

(4) As shown in Fig.6, use the crimping tool to crimp the

metal sleeve at the center position. Be sure to crimp fully
to the complete closure of the tool.

1.25

2.0

5.5

Fig.6

(5) Check the four points noted in Fig.7.

Not easily pulled free

Wire insulation recessed

more than 4 mm

Fig.7

Crimping tool

Crimped at approx. center

of metal sleeve

Conductors extended

1

S40888-01

v

Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been
returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compli­ance with safety standards.

1. Insulation resistance test

Confirm the specified insulation resistance or greater between power cord plug prongs and
externally exposed parts of the set (RF terminals, antenna terminals, video and audio input
and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below.

2. Dielectric strength test

Confirm specified dielectric strength or greater between power cord plug prongs and exposed
accessible parts of the set (RF terminals, antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.). See table 1 below.

3. Clearance distance

When replacing primary circuit components, confirm specified clearance distance (d), (d’) be­tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.

Chassis

Fig. 8

4. Leakage current test

Confirm specified or lower leakage current between earth ground/power cord plug prongs
and externally exposed accessible parts (RF terminals, antenna terminals, video and audio
input and output terminals, microphone jacks, earphone jacks, etc.).
Measuring Method : (Power ON)
Insert load Z between earth ground/power cord plug prongs and externally exposed accessi­ble parts. Use an AC voltmeter to measure across both terminals of load Z. See figure 9 and
following table 2.

5. Grounding (Class 1 model only)

Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts (Video in,
Video out, Audio in, Audio out or Fixing screw etc.).

Measuring Method:

Connect milli ohm meter between earth pin in AC inlet and exposed accessible parts. See figure 10 and grounding specifications.

AC inlet

Earth pin

Exposed accessible part

Grounding Specifications

Region
USA & Canada
Europe & Australia

Externally
exposed
accessible part

Grounding Impedance (Z)

d

d'

≤

Z 0.1 ohm

≤

Z 0.5 ohm

Power cord,
primary wire

Z
V

Fig. 9

ab

c

Milli ohm meter

Fig. 10

AC Line Voltage

100 V
100 to 240 V
110 to 130 V

110 to 130 V
200 to 240 V

100 V

110 to 130 V

110 to 130 V
220 to 240 V

Note: These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.

Region

Japan

USA & Canada

Europe & Australia R 10 MΩ/500 V DC

Region Load Z

Japan

USA & Canada

Europe & Australia

Table 2 Leakage current specifications for each region

Insulation Resistance (R)

≤

R 1 MΩ/500 V DC

≥≥

1 MΩ R 12 MΩ/500 V DC

≤

Table 1 Specifications for each region

1 kΩ

0.15 µF

1.5 kΩ

2 kΩ

50 kΩ

Dielectric Strength

AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute

AC 3 kV 1 minute
AC 1.5 kV 1 minute

i 1 mA rms Exposed accessible parts

i 0.5 mA rms

i 0.7 mA peak
i 2 mA dc

i 0.7 mA peak
i 2 mA dc

2

≤
≤

≤
≤

≤
≤

(Class 2)
(Class 1)

Clearance Distance (d), (d')

≤

d, d' 3 mm

≤

d, d' 4 mm

≤

d, d' 3.2 mm

≤

d 4 mm

≤

d' 8 mm (Power cord)

≤

d' 6 mm (Primary wire)

a, b, cLeakage Current (i)AC Line Voltage

Exposed accessible parts

Antenna earth terminals

Other terminals

S40888-01

SPECIFICATIONS

DVD PART

Power supply AC 110~240V, 50/60 Hz(HR-XV2ER)

AC 200~240V, 50/60 Hz(HR-XV2EX/HR-XV2EY/

HR-XV2EL/HR-XV11EX/ HR-XV2EK/HR-XV2EF/HR-XV2EZ)
Power consumtion 23W
Mass 5.4kg
External dimensions 430 x 97.5 x 293 (W x H x D)
Signal system PAL 625/50
Laser Semiconductor laser, wavelength 650nm
Frequency range (digital audio) 4 Hz to 20 kHz
Signal-to-noise ratio (digital audio) More than 100 dB (EIAJ)
Audio dynamic range (digital audio) More than 95 dB (EIAJ)
Harmonic distortion(digital audio) 0.008%
Wow and flutter Below measurable level (less than +0.001%(W.PEAK)) (EIAJ)
Operations Temperature : 5˚C(41˚F) to 35˚C(95˚F),

Operation status : Horizontal

OUTPUTS

Video outputs .0V(p-p), 75Ω, negative sync., RCA jack x 1/SCART(TO TV)
S video outputs

Component video output (Y) 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1

Audio output(digital audio) 0.5V(p-p), 75Ω, RCA jack X 1/SCART(TO TV)
Audio output(optical audio) Optical connector x 1
Audio output(analog audio) 2.0Vrms (1kHz, 0dB), 330Ω, RCAjack (L, R) x 1/

VHS PART

Video Head System Double azimuth 4 heads, helical scanning
Tape format Tape width 12.7 mm (0.5 inch)
Timer 24 hours display type

*Designs and specifications are subject to change without notice.
*Weight and dimensions shown are approximate.

1
(Y)1.0V(p-p), 75Ω, negative sync.,Mini DIN 4-pin x 1
(C)0.3V(p-p), 75Ω

(Pb)/(Pr) 0.7 V (p-p), 75 Ω

SCART(TO TV)

1-5

SECTION 3

ELECTRICAL

CONTENTS

OVERALL BLOCK DIAGRAM

.............................3-2

VCR PART
ELECTRICAL ADJUSTMENT

PROCEDURES

..........................................................3-3

ELECTRICAL TROUBLESHOOTING
GUIDE

BLOCK DIAGRAMS

CIRCUIT DIAGRAMS

...........................................................................3-4

1. POWER(SMPS) CIRCUIT.......................................3-4

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

..............................................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

............................................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

• WAVEFORM & VOLTAGE SHEET.........................3-42

• CIRCUIT VOLTAGE CHART...................................3-44

DVD PART
ELECTRICAL TROUBLESHOOTING

GUIDE & WAVEFORMS

1. System Clock X501 (27Mhz) ...............................3-52

2. Initializing between MPEG and SDRAM ............3-52

3. Initializing between MPEG and Flash ................3-53

4. Reference Voltage 1.............................................3-53

5. Reference Voltage 2.............................................3-54

6. Checking the initial step of M/D Ass’y...............3-54

7. Checking the Video Signal..................................3-55

8. Checking the first step of servo (1) ...................3-55

9. Checking the second step of servo (2) .............3-56

10. Checking the output of Audio signal ...............3-56

11. Checking the reset port.....................................3-57

12. Checking the focus & tracking servo..............3-57

13. Checking the track jump...................................3-58

14. The status of CD_LD and DVD_LD in the

PLAY MODE........................................................3-58

15. The status Focus and spindle motor ...............3-59

16. DATA STREAM ...................................................3-59

17. Input Clock to IC202..........................................3-60

18. Tray Open and Close.........................................3-60

19. Focus Drive signal(FACT) .................................3-61

20. Signals for Front micom ...................................3-61

21. FACT and FE for DVD9 (Dual disc)..................3-62

22. System clock of MPEG IC.................................3-62

BLOCK DIAGRAMS

1. DVD Overall Block Diagram................................3-63

2. SERVO Block Diagram........................................3-64

3. MPEG Block Diagram..........................................3-65

4. AUDIO Block Diagram .........................................3-66

.......................................3-52

..............................................3-63

PRINTED CIRCUIT DIAGRAMS

1. MAIN P.C.BOARD .................................................3-48

2. SMPS P.C.BOARD ...............................................3-50

.......................3-48

CIRCUIT DIAGRAMS

1. RD SERVO CIRCUIT DIAGRAM..........................3-67

2. SYSTEM CIRCUIT DIAGRAM ..............................3-69

3. AUDIO CIRCUIT DIAGRAM..................................3-71

4. INTERFACE CIRCUIT DIAGRAM.........................3-73

• CIRCUIT VOLTAGE CHART...................................3-75

PRINTED CIRCUIT DIAGRAMS

1. MAIN P.C.BOARD (TOP VIEW) ............................3-79

2. MAIN P.C.BOARD (BOTTOM VIEW) ....................3-81

............................................3-67

.......................3-79

3-1

ELECTRICAL ADJUSTMENT PROCEDURES

1. Servo Adjustment

1) PG Adjustment

VCR PART

•Test Equipment
a) OSCILLOSCOPE

b) NTSC MODEL : NTSC SP TEST TAPE
C) PALMODEL : PAL SP TEST TAPE

• Adjustment And Specification

MODE

PLAY

MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION

V.Out
H/SW

R/C TRK JIG KEY 6.5 ± 0.5H

• 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 and CH2 to the Video Out for the VCR.
c) Trigger the mixed Combo Video Signal of CH2 to the CH1 H/SW, and then check the distance (time dif-

ference), which is from the selected A(B) Head point of the H/SW 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 at the same time,

then it goes into Tracking initial mode.
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

H/SW

T/P

H/SW

Composite

VIDEO

V.Out

OSCILLOSCOPE

CH1 CH2

R/C KEY

V.outH/SW

6.5H(412us)

3-3

ELECTRICAL TROUBLESHOOTING GUIDE

1. Power(SMPS) CIRCUIT

(1) No 5.3VA (SYS/TUNER)

NO 5.3VA.

YES

Is the F101 normal?

YES

Is the BD101

NO

NO

normal?

YES

Is the R101

NO

normal?

YES

Is Vcc(8.5~21V) sup-

NO

plied to IC101 Pin7?

YES

Replace the F101.

(Use the same Fuse)

Replace the
BD101.

Replace the R101.

Is the D102
normal?

NO

Check or Replace
the D102.

(2) No 12VA (TO CAP, DRUM MOTOR)

NO 12VA.

YES

Is the Vcc(13V) supplied

NO

to (+) terminal in D115?

YES

Is the Vcc(12V) supplied

NO

to (-) terminal in D115?

YES

Check or Replace
the D110.

Replace the D115.

Check or Replace
the Motor Vcc.

(3) No 5.0V (SYS, Hi-Fi, TUNER, Y/C)

Is the D112 normal?

YES

Is there about 2.5V
at the IC103 Vref?

YES

Check the Main PCB

5.3VA/5.0V Line short?

NO

NO

Replace the D112.

Replace the IC103.

NO 5.0VA.

YES

Is 5.3VA put into
the Q160 Emitter?

YES

Is the Q162 Base
“H”?

YES

Is about 5V put into
the Q160 Base?

YES

Check or Replace
the Q162/Q160.

NO

NO

NO

5.3VA Line Check.

Check the Power
Control.

Check or Replace the Q162,
R157, R158, R159, D121.

3-4

(4) No 5V (TO DVD)

(5) No 33V (TUNER)

NO 5V.

YES

Is 5.3VA put into
the Q160 Emitter?

YES

Is the Q162 Base
“H”?

YES

Is about 5V put into
the Q160 Base?

YES

Check or Replace
the Q162/Q160

(6) No REG 12V

NO

NO

NO

5.3VA Line Check.

Check the Power
Control.

Check or Replace the Q162,
R157, R158, R159, D121.

No 33V.

YES

Is Q162 Base “H”?

YES

Check or Replace
Q161, R154, R155.

NO

Check the Power
Control.

No REG 12V.

YES

Is 13V put into the

NO

Q156 Collector?

YES

Is 13V put into the

NO

R153 Base?

YES

Check or Replace the Q156,
ZD103, R153, C151.

Check or Replace
D110.

Check 33V Line.

3-5

(4) No 5V (TO DVD)

(5) No 33V (TUNER)

NO 5V.

YES

Is 5.3VA put into
the Q160 Emitter?

YES

Is the Q162 Base
“H”?

YES

Is about 5V put into
the Q160 Base?

YES

Check or Replace
the Q162/Q160

(6) No REG 12V

NO

NO

NO

5.3VA Line Check.

Check the Power
Control.

Check or Replace the Q162,
R157, R158, R159, D121.

No 33V.

YES

Is Q162 Base “H”?

YES

Check or Replace
Q161, R154, R155.

NO

Check the Power
Control.

No REG 12V.

YES

Is 13V put into the

NO

Q156 Collector?

YES

Is 13V put into the

NO

R153 Base?

YES

Check or Replace the Q156,
ZD103, R153, C151.

Check or Replace
D110.

Check 33V Line.

3-5

(7) No 8V(TO DVD)

(8) No 3.3V(TO DVD)

NO 8V.

YES

Is Vcc(13V) supplied to
(+) terminal in D114?

YES

Is Vcc(12V) supplied
to IC151 Pin1?

YES

Is the Q162 Base
“H”?

YES

Check or Replace
IC151, R170, C154.

NO

NO

NO

Check or Replace
the D110.

Check or Replace
the D114.

Check the Power
Control.

NO 3.3V.

YES

Is Vcc(4V) supplied
to IC152 Pin1?

YES

Is the Q162 Base
“H”?

YES

Check or Replace
IC152, R156, C153.

NO

NO

Check or Replace
the D111.

Check the Power
Control.

3-6

2. SYSTEM/KEY CIRCUIT

(1) AUTO STOP

Auto Stop

YES

Does the SW25 waveform
appear at the IC501
Pin105?

YES

Do the T-UP Reel Pulses
appear at the IC501 Pin49?

YES

Replace the IC501.

NO

NO NO

Check the Drum Motor
signal.

Do T/UP Reel Pulses
appear at the Q514
Base terminal ?

YES YES

Replace the T/UP Reel
Sensor (RS501).

(2) The unstable loading of a Cassette tape

The unstable loading of a

Cassette tape

YES

Does 5.2V appear at the
RS501?

NO

Check the Power Circuit.

Is 12V applied to the

PMC01 Pin8?

YES

Does the “H” signal appear
at the IC501 Pin30 during
inserting the CST ?

YES

Does the “L” signal appear
at the IC501 Pin72 during
inserting the CST?

YES

Check the Deck
Mechanism.

Caution :

Auto stop can occur because Grease or Oil is dried up

NO

NO

NO

Check the CST SW and
the peripheral circuitry.

3-7

Check the Power.

Is 5.3V applied to the
R544 ?

YES

Refer to SMPS 5.3VA
troubleshooting.

Check the IC501
Pins68, 69, 70, 71.

NO

3. SERVO CIRCUIT

(1) Unstable Video in PB MODE

Unstable Video in
PB Mode.

YES

Does the Noise level of the
screen change
periodically?

YES

Do the CTL pulses appear
at the IC501 Pin8?

YES

Does the CFG waveform
appear at the IC501
Pin9?

YES

On tracking do the CTL
pulses move?

YES

Does the Video Envelope
waveform appear at the
IC501 Pin24?

YES

Replace the IC501.

(2) When the Drum Motor

(2) doesn’t run.

When the Drum Motor
doesn’t run,

Does 12V appear at the
PMC01 Pin8?

NO

NO

NO

NO

Is adjusting the height of
the CTL Head accurate?

Replace the IC501.

Refer to “When the Y signal
doesn’t appear on the
screen in PB Mode”.

Refer to “(2)
No 12VA of Power section”

Do the Drum PWM Pulses
appear at the IC501
Pin107?

YES

Aren’t the foil patterns and

the Components between
IC501 Pin107 and PMC01
Pin12 short?

NO

Readjust the height of the
CTL Head.

NO

Do the DFG Pulses appear
at the PMC01 Pin11?

YES

NO

Replace the Cap M.

YES

Does 2.8V appear at the
PMC01 Pin12?

YES

Check the connector
(PMC01) and the Drum
Motor Ass’y .

NO

Do the DFG Pulses appear

at the IC501 Pin104?

YES

Do the Drum PWM Pulses
appear at the IC501
Pin107?

YES

Aren’t the connecting patterns and the Components
between IC501 Pin107 and PMC01 Pin12 short?

3-8

NO

NO

Aren’t the foil patterns and

the Components between
IC501 Pin104 and PMC01
Pin11 short?

Replace the IC501.

2. SERVO CIRCUIT

(3) When the Capstan Motor doesn’t run,

When the Capstan Motor doesn’t run,

Does 12VA appear at the PMC01?

YES

Does 2.8V appear at the PMC01?

YES

Check the PMC01 and the Capstan
Motor Ass’y .

Aren’t the foil patterns and Components

between IC501 Pin108 and PMC01
Pin9 short?

Does the CFG signal come into the
IC501 Pin9?

NO

NO

YES

YES

Refer to “SMPS(CAPSTAN/12Volt)
Trouble Shooting”.

Does the PWM signal appear at the
IC501 Pin108?

NO

Does the CFG signal appear at the
PMC01 Pin1?

NO

Check the Capstan Motor Ass’y.

YES

Does the Capstan PWM signal appear at
the IC501 Pin108?

YES

Aren’t the foil patterns and Components

between IC501 Pin108 and PMC01
Pin9 short?

NO

Aren’t the foil patterns and component
between IC501 Pin9 and PMC01
Pin1 short?

NO

Replace the IC501.

3-9

(4) KEY doesn’t working

KEY doesn’t working.

Is 5V applied to the IC501
Pin36?

YES

Does LED or FLD change
when a function button is
pressed?

NO

NO

Refer to “SMPS 5.3VA
Trouble Shooting”.

Replace the defective
switches.

3-10

4. Y/C CIRCUIT

(1) No Video in EE Mode,

No Video in EE Mode

Does the Video signal
appear at the IC301 Pin15?

YES

Is 5V applied to the IC301
Pins4, 22, 47, 60, 84?

YES

Does the Video signal
appear at the IC301 Pin29?

YES

Does the Video signal
appear at the IC501 Pin19?

YES

Does the Video signal
appear at the Emitter termi­nal of the Q805?

NO

NO

NO

NO

NO

Check the 24Pin of Tuner.

Check the 5.2VT, 5.3VA
Line. (Power Circuit)

Is I2C BUS signal applied to
the IC301 Pins73, 74?

YES

Chck the path of the signal
between the IC301 Pin29
and IC501 Pin17.

Does the 12VT, 5.4VA
appear at the Emitter termi­nal of the Q805.

NO

NO

Check the System Circuit.
(Refer to ‘SYSTEM I
CHECK Trouble Shooting’)

Check C327. (AGC)

Replace the IC301.

YES

2

C BUS

YES

Replace the Q805.

3-11

Check the 12VT, 5.4VA
Line. (Power Circuit)

3. Y/C CIRCUIT

(2) When the Y(Luminance) signal doesn’t appear on the screen in PB Mode,

Is 5.2VT, 5.3VA applied to the
IC301 Pins22, 47, 60, 84?

YES

Is the I2C Bus siganl applied

to the IC301 Pins73, 74 ?

YES

Does the normal RF signal
appear at the IC301 Pin76?

YES

NO

NO

NO

Check the line of the 5.2VT,

5.3VA Line. (Power Circuit)

Refer to ‘SYSTEM I2C BUS
CHECK Trouble Shooting’.

Is the V.H.S/W signal
applied to the IC301 Pin80?

YES

Is V.H.S/W “H” about 3.4V
at the IC301 Pin80?

YES

Clean the Drum.

NO

NO

NO

Check the System Circuit.
(IC501 Pin105)

Check the V.H.S/W level.
(Check R335)

Replace the IC301.

Does the Y(Luminance) RF
signal appear at the IC301
Pin9?

YES

Is the Y(Luminance) Video
waveform showed up at
theIC301 Pins49, 40?

YES

Replace the IC301.

NO

Check the path of the
Y(Luminance) RF signal.
(Check C337, C340)

YES

3-12

3. Y/C CIRCUIT

(3) When the C(Color) signal doesn’t appear on the screen in PB Mode,

Is 5.2VT/5.3VA applied to the
IC301 Pins22, 47, 60, 84?

YES

Does the Color signal
appear at the IC301
Pin57 ?

YES

Replace the IC301.

NO

NO

Check the line of the 5.2VT/

5.3VA Line. (Power Circuit)

Does the X301(4.43MHZ)
oscillate?

Does the Color signal
appear at the IC301 Pin55?

YES

Replace the IC301.

NO

NO

Replace the X301.

Check the Color Pass.

3-13

3. Y/C CIRCUIT

(4) When the Video signal doesn’t appear on the screen in REC Mode,

Is the EE signal normal?

YES

Is 5.2VT/5.3VA applied to the
IC301 Pins4, 22, 47, 60, 84

YES

Does PB Mdoe operate
normally?

YES

Does the RF signal appear
at the IC301 Pin76?

YES

NO

NO

NO

NO

Check EE Mode.

Check the line of the 5.2VT/

5.3VA Line.(Power Circuit)

Check PB Mode.

Is the REC ‘H’ signal
(about 4V) applied to the
IC301 Pin80?

YES

Check REC Luminance
Pass & Color Pass.

NO

YES

Check the System of REC
‘H’. (the IC501 Pin47)

Replace the IC301.

Does the REC RF signal
appear at the IC301
Pins80, 90?

YES

Check the Drum &
Drum Connector

3-14

5. Hi-Fi CIRCUIT

(A) No Sound(EE Mode)

No Sound.

YES

Check the TU Audio of IC801
Pins2, 3.

Check the DVD Audio of IC801
Pins4, 5.

Check the AV1 Audio of IC801
Pins6, 7.

Check the AV2 Audio of IC801
Pins8, 9.

Check the AV3 Audio of IC801
Pins10, 11.

Check the Vcc of IC801 Pins34, 40,
IC803 Pin13.

NO

NO

NO

NO

NO

YES

NO

Check the IC751 Pins30, 31.

Check the DVD MODULE.
(PMD02 Pins13, 15).

Check the Scart1 Jack.
(SC901 Scart1 Audio in Pins2, 6).

Check the Scart2 Jack.
(SC901 Scart2 Audio in Pins2, 6).

Check the front Jack.
(L5F1, L5F2).

Check the Power 5.2V, 12VT.

YES

Check the IIC Clock and DATAat
IC801 Pins42, 43.

YES

Check the Audio of IC801 Pins16, 17.

YES

Check the Audio of IC803 Pins3, 5.

YES

Check the JK902.

NO

Check the IC501 Pins59, 60.

NO

Replace IC801.

NO

Replace IC803.

3-15

3. Y/C CIRCUIT

(B) Hi-Fi Playback

PB mode

No Sound.

YES

YES

Check the Vcc of IC801
(Pins34, 40)

YES

Check the Hi-Fi Selection switch.
(IC801 Pin41) and the Tape quality.

YES

Is the RF Envelope at
IC801 Pin44 over 2Vp-p?

YES

Check IC801 Pin42(Data),
Pin43(Clock)

YES

Do Audio Signals appear at
IC801 Pin16(L-CH), 17(R-CH)?

YES

Do Audio Signals appear at
IC803 Pin16(L-CH), 11(R-CH)?

YES

NO

NO

NO

NO

NO

NO

Check Power 5.2V, 12VT.

Check IC501 Pin106
(A.H/SW)

Check the parts of µ-COM
(IC501 Pins59, 60)

Check the Connection at
P3D01 Pins7, 9.

Check the A.IN line of
IC803(C837, C838)

Do Audio Signals appear at
IC803 Pins3, 5?

YES YES

Do Audio Signals appear at
JK902?

NO

NO

Check the Vcc of IC803
Pin13.

Replace IC803.

Check the Jack(JK902)

3-16

NO

Check Power.

(C)

Hi-Fi REC.

YES

It can’t be recorded Hi-Fi Audio
signal.

YES

Check Vcc of IC801.(Pins34, 40)

YES

Check IC801 Pin42(Data), Pin43(CLOCK).

YES

Do Audio signals appear at IC801
Pins16, 17?

YES

Do FM Audio signals appear at IC801
Pin36?

YES

Check the Contact Point of Drum
Connector if good then Replace the Drum.

NO

NO

NO

NO

Check Power 5V, 12VT.

Check ports of µ-COM.
(IC501 pins 59, 60)

Check Audio input signal of IC801
Pins2, 3(TU.A.), 4, 5(DVD.A.),
6, 7(AVI.A.), 8, 9(AV2.A.), 10, 11(AV3.A.).

Replace IC801.

3-17

6. Tuner/IF CIRCUIT

(A) No Picture on the TV screen

No picture on the TV
screen

YES

Does the Video signal at
the TU701 Pin24.

YES

NO

Is +33V applied to TU701
Pin16?

YES

Is +5V applied to TU701
Pin13?

YES

Does the Clock signal
appear at TU701 Pin11?

YES

Does the data signal
appear at TU701 Pin12?

YES

Replace Tuner.

NO

NO

NO

NO

Check 33V line.

Check 5V line.

Check the lIC Clock Signal
of µ-COM Pin59.

Check the lIC Data Signal
of µ-COM Pin60.

Does Sync appear at
IC501 Pin111.

YES

Does the Video signal at
the IC501 Pin19.

YES

Does the Video signal at
the IC301 Pin29.

YES

Does the Video signal at
the IC802 Pin29.

YES

Check the signal flow from
IC803 Pin6 to SC901 Pin19.

NO

NO

NO

NO

Check the signal flow from
TU701 Pin24 to IC301 Pin15.

Check the signal from IC301
Pin65 to IC501 Pin17.

Check the signal from IC501
Pin19 to IC805 Base.

Check the signal from IC501
Pin54 to IC802 Pin7.

3-18

(B) No Sound

No Sound.

YES

Check the Vcc of IC751 Pins1, 11, 19,
22, 33.

YES

Check the Tuner SiF signal at IC751
Pin2.

YES

Check the oscillator of IC751 Pins5, 6.

YES

Check the Audio of IC751 Pins30, 31.

YES

Check the Audio of IC801 Pins2, 3.

YES

NO

NO

NO

NO

NO

Check 5.2V Line.

Check the Tuner SIF of TU701 Pin22.

Replace X751

Check the IIC Clock and Data at IC751
Pins12, 13.

Check the signal flow from IC751
Pins30, 31 to IC801 Pins2, 3.

Check the Audio of IC801 Pins16, 17.

YES

Check the Audio of IC803 Pins3, 5.

YES

Check the Signal flow from IC803
Pins3, 5, SC901 Pins1, 3.

NO

NO

Check the IIC Clock and Data at IC801
Pins42, 43.

Check the signal flow from IC801
Pins16, 17 to IC803 Pins11, 16.

3-19

ELECTRICAL TROUBLESHOOTING GUIDE

1. µ-COM Circuit

A. No Power

DVD PART

POWER ON

YES

Does Logo appear

on the screen?

YES

OK

1

YES

Does no DISC appear?

NO

NO

Does Hello

appear at FLD?

NO

Reconnect it.

NO

Is PDV02

connected normally?

Refer to VCR Part

YES

YES

Check power.

(Refer to power)

If power is
normal

Is PDV02 Pins8, 9,

10, 11 normal?

NO

A

1

Is oscillation of

X501 normal?

YES

Are IC501 normal?

YES

A

NO

Check the oscillation

NO

Check short.

Replace IC501

OK

3-52

Check short

Replace IC301.

NONO

NO

The waveform

on AD(0~21) of IC501

normal?

YES

Are IC301 Pins5, 26 normal?

YES

Replace Main B/D.

B. Audio abnormal

C. Video abnormal

AUDIO ABNORMAL

Check Audio jack.

YES (If OK)

Check MPEG_CLK Signal
(IC501 Pin22) of MPEG part.

YES (If OK)

Refer to Audio part.

YES (If OK)

Refer to MPEG part.

YES (If OK)

Replace Main B/D.

VIDEO ABNORMAL

Check Video jack.

YES (If OK)

Refer to Video part.

YES (If OK)

Refer to MPEG part.

YES (If OK)

Replace Main B/D.

D. Open/Close abnormal

Check the connection of MD.

YES

OPEN/CLOSE ABNORMAL

connection of PDV02.

NO

Check PMD03 Pins 5, 6.

Refer to SERVO part.

Check Front.

YES (If OK)

Check the

YES

YES

NO

Reconnect it.

3-53

E. Picture abnormal

PICTURE ABNORMAL

Check the disc.

Refer to Servo part

Check MPEG_CLK Signal
(IC501 Pin22) of MPEG part

Check DSP

Check MPEG

If OK

YES (If OK)

YES (If OK)

F. Disc Error

YES (If OK)

Replace Main B/D

DISC ERROR

Check Disc

YES (If OK)

Refer to Servo part

YES (If OK)

Replace main B/D

3-54

2. MPEG Circuit

Power is on

Does Logo appear

on the screen?

YES

moving picture of the DVD Disc

Does the

play on the screen

normally?

YES

NO

NO

YES

Check power & clock.

YES

Is MPEG data signal normal?

YES

Is error signal normal?

NO

OK

NO

Check CD/DVD DSP output

signal.

OK

Check MPEG Decoder input

signal.

Check CD/DVD DSP output

signal.

OK

Check MPEG Decoder input

signal.

Does the

moving picture of the video

CD play on the screen

normally?

YES

OPTION

_ If included VCD function.

Does the audio sound

output normally?

YES

END

NO

NO

Is MPEG data signal normal?

YES

Is Clock normal?

YES

Does the audio

sound output from MPEG

decoder?

YES

3-55

NO

NO

Check CD/DVD DSP output

signal.

OK

Check MPEG Decoder input

signal.

Check clock signal

Check clock signal

3. RF/Servo Circuit

A.

CHECK POINT(General)

Does signal goes

"High" to IC201 Pin186 when the

power is on?

YES

Does signal pulse

input to IC201 Pins53, 54 when

the power is on?

YES

Does

33.8688MHz clock input to
IC201 Pin138?

Is IC201

Pins79, 80, 84, 88 voltage

about 2.2V?

YES

NO

NO

NO NO

NO

Check "2.µ-COM Part".

Does

33.8688MHz clock input
to IC201 Pin59?

YESYES

Replace IC201

(IC206 soldering or IC defect).

Check power circuit.

Replace X201 or IC206

(33MHz clock defect)

END

3-56