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

SERVICE MANUAL

DVD PLAYER /VIDEO CASSETTE RECORDER

HR-XV2EX, HR-XV2EY,

HR-XV2EL, HR-XV11EX

	VCR	POWER
		DVD
TV
		PAL
DVDMENU	MEMORY	SEARCH
	SUBTITLE	ANGLE
REPEATA-B	ZOOM	TITLE REPEAT
		SHOWVIEW
1	2	3
		VIDEOPlus+
4	5	6
7	8	9
	TV	TV
0		TV/VCR

R

TV/VCR PR +

AUX

OK

0000

TV/VCR PR

AUDIO

MONITOR

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

General

Power requirements	AC 200-240V, 50/60 Hz
Power consumption	Operation mode : 23W
	Standby mode : 6.7W
Dimensions (approx.)	430 X 97.5 X 293 mm (w/h/d)
Mass (approx.)	4.8 kg
Operating temperature	5˚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
	DVD (PCM 48 kHz): 8 Hz to 22 kHz
	CD: 8 Hz to 20 kHz

Inputs (VCR)

Audio

Video

Outputs (DVD)

S-VIDEO OUT

COMPONENT VIDEO OUT

Audio output (digital audio) Audio output (optical audio) Audio output (analog audio)

Outputs (VCR)

Audio

Video

-6.0dBm, more than 10 kohms (SCART) -6.0dBm, more than 47 kohms (RCA)

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

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

(C)0.3 Vp-p 75 ohms

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

(Pb)/(Pr) 0.7 V (p-p), 75 , RCA jack x 2 0.5 V (p-p), 75 Ω, RCA jack x 1

5 V (p-p), 75 Ω , Optical connector x 1

2.0 Vrms (1 kHz, 0 dB), 330 , RCA jack (L, R) x 2/SCART(TO TV)

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

Design and specifications are subject to change without notice.

Signal-to-noise ratio Harmonic distortion Dynamic range

More than 100dB (ANALOG OUT connectors only)

Less than 0.008%

More than 100 dB (DVD)

More than 95 dB (CD)

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 Confidential Unpublished Works.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.

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

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 comply 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.

Fig.1

7.Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.)

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

9.When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it.

Power cord

Fig.2

10.Also check areas surrounding repaired locations.

11.Products using cathode ray tubes (CRTs)

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.

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

Fig.4

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

Metal sleeve

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.

25	Crimping tool
1.
2.
0
5.
5

Fig.6

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

Not easily pulled free	Crimped at approx. center
		of metal sleeve
		Conductors extended
Wire insulation recessed
more than 4 mm
Fig.7

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

d

d'

Power cord,

primary wire

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.

	a	b
Externally	Z	c
exposed	V
accessible part
	Fig. 9

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	Grounding Specifications
	Exposed accessible part	Grounding Impedance (Z)
	Region
	USA & Canada	Z ≤ 0.1 ohm
Earth pin	Europe & Australia	Z ≤ 0.5 ohm

Milli ohm meter

Fig. 10

AC Line Voltage

Region

Insulation Resistance (R)

Dielectric Strength

Clearance Distance (d), (d')

100 V

Japan

R

£

1 MΩ/500 V DC

AC 1 kV 1 minute

d, d'

£

3 mm

100 to 240 V

AC 1.5 kV 1 miute

d, d'

£

4 mm

110 to 130 V

USA & Canada

1 MΩ

³

R

³

12 MΩ/500 V DC

AC 1 kV 1 minute

d, d'

£

3.2 mm

110 to 130 V

AC 3 kV 1 minute

d

£

4 mm

Europe & Australia

R

£ 10 MΩ/500 V DC

(Class 2)

d'

£

8 mm (Power cord)

200 to 240 V

AC 1.5 kV 1 minute

d'

£

6 mm (Primary wire)

(Class 1)

Table 1 Specifications for each region

AC Line Voltage

Region

Load Z

Leakage Current (i)

a, b, c

100 V

Japan

1 kΩ

i

≤

1 mA rms

Exposed accessible parts

110 to 130 V

USA & Canada

0.15 F

1.5 kΩ

i

≤

0.5 mA rms

Exposed accessible parts

i

≤

0.7 mA peak

Antenna earth terminals

110 to 130 V

Europe & Australia

2 kΩ

i

≤

2 mA dc

220 to 240 V

i

≤

0.7 mA peak

Other terminals

50 kΩ

i ≤

2 mA dc

Table 2 Leakage current specifications for each region

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

2	S40888-01

SPECIFICATIONS

DVD PART

Power supply

Power consumtion

Mass

External dimensions

Signal system

Laser

Frequency range (digital audio) Signal-to-noise ratio (digital audio) Audio dynamic range (digital audio) Harmonic distortion(digital audio) Wow and flutter

Operations

OUTPUTS

Video outputs

S video outputs

Component video output

Audio output(digital audio) Audio output(optical audio) Audio output(analog audio)

VHS PART

Video Head System

Tape format

Timer

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) 23W

5.4kg

430 x 97.5 x 293 (W x H x D) PAL 625/50

Semiconductor laser, wavelength 650nm 4 Hz to 20 kHz

More than 100 dB (EIAJ) More than 95 dB (EIAJ) 0.008%

Below measurable level (less than +0.001%(W.PEAK)) (EIAJ) Temperature : 5˚C(41˚F) to 35˚C(95˚F),

Operation status : Horizontal

1.0V(p-p), 75Ω, negative sync., RCA jack x 1/SCART(TO TV) (Y)1.0V(p-p), 75Ω, negative sync.,Mini DIN 4-pin x 1 (C)0.3V(p-p), 75Ω

(Y) 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1 (Pb)/(Pr) 0.7 V (p-p), 75 Ω

0.5V(p-p), 75Ω, RCA jack X 1/SCART(TO TV) Optical connector x 1

2.0Vrms (1kHz, 0dB), 330Ω, RCA jack (L, R) x 1/ SCART(TO TV)

Double azimuth 4 heads, helical scanning

Tape width 12.7 mm (0.5 inch)

24 hours display type

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

1-5

SECTION 3 ELECTRICAL

CONTENTS

OVERALL BLOCK DIAGRAM.............................		3-2
VCR PART
ELECTRICAL ADJUSTMENT
PROCEDURES..........................................................		3-3
ELECTRICAL TROUBLESHOOTING
GUIDE ...........................................................................		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
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
• WAVEFORM & VOLTAGE SHEET .........................		3-42
• CIRCUIT VOLTAGE CHART...................................		3-44
PRINTED CIRCUIT DIAGRAMS .......................		3-48
1.	MAIN P.C.BOARD .................................................	3-48
2.	SMPS P.C.BOARD ...............................................	3-50

DVD PART
ELECTRICAL TROUBLESHOOTING
GUIDE & WAVEFORMS.......................................			3-52
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 ..............................................			3-63
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
CIRCUIT DIAGRAMS............................................			3-67
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 .......................			3-79
1.	MAIN P.C.BOARD (TOP VIEW) ............................		3-79
2.	MAIN P.C.BOARD (BOTTOM VIEW)....................		3-81

3-1

VCR PART

ELECTRICAL ADJUSTMENT PROCEDURES

1.Servo Adjustment

1)PG Adjustment

•Test Equipment	b) NTSC MODEL : NTSC SP TEST TAPE
a) OSCILLOSCOPE	C) PAL MODEL : PAL SP TEST TAPE

• Adjustment And Specification

	MODE	MEASUREMENT POINT	ADJUSTMENT POINT	SPECIFICATION
	PLAY	V.Out	R/C TRK JIG KEY	6.5 ± 0.5H
		H/SW
	• 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 (412 s, 1H=63 s).

• 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

V.Out

OSCILLOSCOPE

CH1 CH2

H/SW
T/P	R/C KEY

H/SW V.out

• WAVEFORM

H/SW

6.5H(412us)

Composite

VIDEO

3-3

ELECTRICAL TROUBLESHOOTING GUIDE

1. Power(SMPS) CIRCUIT

(1) No 5.3VA (SYS/TUNER)

NO 5.3VA.

YES

	Is the F101 normal?		NO		Replace the F101.
					(Use the same Fuse)
	YES
			NO
	Is the BD101				Replace the
	normal?				BD101.
	YES
			NO
	Is the R101				Replace the R101.
	normal?
	YES
			NO
	Is Vcc(8.5~21V) sup-				Is the D102
	plied to IC101 Pin7?				normal?
	YES				NO
					Check or Replace
					the D102.
			NO
	Is the D112 normal?				Replace the D112.
	YES
			NO
	Is there about 2.5V				Replace the IC103.
	at the IC103 Vref?
	YES
	Check the Main PCB
	5.3VA/5.0V Line short?

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

NO 12VA.

YES

Is the Vcc(13V) supplied		NO		Check or Replace
to (+) terminal in D115?				the D110.
YES
		NO
Is the Vcc(12V) supplied				Replace the D115.
to (-) terminal in D115?
YES
Check or Replace
the Motor Vcc.

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

NO 5.0VA.

YES

Is 5.3VA put into		NO
the Q160 Emitter?
YES
		NO
Is the Q162 Base
“H”?
YES
		NO
Is about 5V put into
the Q160 Base?
YES
Check or Replace
the Q162/Q160.

5.3VA Line Check.

Check the Power

Control.

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

3-4

(4) No 5V (TO DVD)

NO 5V.

YES

Is 5.3VA put into		NO
the Q160 Emitter?
YES
		NO
Is the Q162 Base
“H”?
YES
		NO
Is about 5V put into
the Q160 Base?
YES
Check or Replace
the Q162/Q160

(6) No REG 12V

No REG 12V.

YES

Is 13V put into the		NO
Q156 Collector?
YES
		NO
Is 13V put into the
R153 Base?
YES
Check or Replace the Q156,
ZD103, R153, C151.

(5) No 33V (TUNER)

No 33V.

YES

5.3VA Line Check.		Is Q162 Base “H”?		NO		Check the Power
						Control.
		YES
Check the Power		Check or Replace
Control.		Q161, R154, R155.

Check or Replace the Q162,

R157, R158, R159, D121.

Check or Replace

D110.

Check 33V Line.

3-5

(4) No 5V (TO DVD)

NO 5V.

YES

Is 5.3VA put into		NO
the Q160 Emitter?
YES
		NO
Is the Q162 Base
“H”?
YES
		NO
Is about 5V put into
the Q160 Base?
YES
Check or Replace
the Q162/Q160

(6) No REG 12V

No REG 12V.

YES

Is 13V put into the		NO
Q156 Collector?
YES
		NO
Is 13V put into the
R153 Base?
YES
Check or Replace the Q156,
ZD103, R153, C151.

(5) No 33V (TUNER)

No 33V.

YES

5.3VA Line Check.		Is Q162 Base “H”?		NO		Check the Power
						Control.
		YES
Check the Power		Check or Replace
Control.		Q161, R154, R155.

Check or Replace the Q162,

R157, R158, R159, D121.

Check or Replace

D110.

Check 33V Line.

3-5

(7) No 8V(TO DVD)

NO 8V.

YES

Is Vcc(13V) supplied to		NO
(+) terminal in D114?
YES
		NO
Is Vcc(12V) supplied
to IC151 Pin1?
YES
		NO
Is the Q162 Base
“H”?
YES

Check or Replace

IC151, R170, C154.

Check or Replace the D110.

Check or Replace the D114.

Check the Power

Control.

(8) No 3.3V(TO DVD)

NO 3.3V.

YES

Is Vcc(4V) supplied NO to IC152 Pin1?

YES

Is the Q162 Base NO “H”?

YES

Check or Replace IC152, R156, C153.

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

NO

Check the Drum Motor

appear at the IC501

signal.

Pin105?

YES

Do the T-UP Reel Pulses

NO

Do T/UP Reel Pulses

NO

Does 5.2V appear at the

appear at the Q514

appear at the IC501 Pin49?

RS501?

Base terminal ?

YES

YES

YES

NO

Replace the T/UP Reel

Replace the IC501. Check the Power Circuit.

Sensor (RS501).

(2) The unstable loading of a Cassette tape

The unstable loading of a

Cassette tape

YES

NO

Is 12V applied to the

Check the Power.

PMC01 Pin8?

YES

Does the “H” signal appear

NO

Is 5.3V applied to the

at the IC501 Pin30 during

R544 ?

inserting the CST ?

YES

YES

NO

Does the “L” signal appear

Check the CST SW and

Refer to SMPS 5.3VA

at the IC501 Pin72 during

the peripheral circuitry.

troubleshooting.

inserting the CST?

NO

YES

Check the Deck

Check the IC501

Mechanism.

Pins68, 69, 70, 71.

Caution : Auto stop can occur because Grease or Oil is dried up

3-7

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	NO
Do the CTL pulses appear					Is adjusting the height of
at the IC501 Pin8?					the CTL Head accurate?		NO
	YES
Does the CFG waveform								Readjust the height of the
appear at the IC501								CTL Head.
Pin9?
	YES	NO
On tracking do the CTL					Replace the IC501.
pulses move?
	YES
Does the Video Envelope		NO			Refer to “When the Y signal
waveform appear at the					doesn’t appear on the
IC501 Pin24?					screen in PB Mode”.
	YES
Replace the IC501.					Refer to “(2)
					No 12VA of Power section”

(2) When the Drum Motor

NO

Do the Drum PWM Pulses

Do the DFG Pulses appear

doesn’t run.

appear at the IC501

at the PMC01 Pin11?

When the Drum Motor

Pin107?

YES

YES

NO

doesn’t run,

Aren’t the foil patterns and

Replace the Cap M.

the Components between

IC501 Pin107 and PMC01

Does 12V appear at the

Pin12 short?

PMC01 Pin8?

NO

YES

Do the DFG Pulses appear

Aren’t the foil patterns and

NO

the Components between

Does 2.8V appear at the

at the IC501 Pin104?

IC501 Pin104 and PMC01

PMC01 Pin12?

NO

YES

Pin11 short?

YES

Do the Drum PWM Pulses

NO

Replace the IC501.

Check the connector

appear at the IC501

(PMC01) and the Drum

Pin107?

Motor Ass’y.

YES

Aren’t the connecting patterns and the Components

between IC501 Pin107 and PMC01 Pin12 short?

3-8

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

When the Capstan Motor doesn’t run,

Does 12VA appear at the PMC01?			NO		Refer to “SMPS(CAPSTAN/12Volt)
					Trouble Shooting”.
	YES
Does 2.8V appear at the PMC01?
			NO
	YES

Check the PMC01 and the Capstan				Does the PWM signal appear at the
Motor Ass’y.				IC501 Pin108?
			YES
							NO
Aren’t the foil patterns and Components				Does the CFG signal appear at the
between IC501 Pin108 and PMC01
				PMC01 Pin1?
Pin9 short?
			YES
							NO
Does the CFG signal come into the				Check the Capstan Motor Ass’y.
IC501 Pin9?
			NO
	YES

Does the Capstan PWM signal appear at the IC501 Pin108?

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

NO

YES

Aren’t the foil patterns and Components between IC501 Pin108 and PMC01 Pin9 short?

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		Refer to “SMPS 5.3VA
	NO		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

Check the 24Pin of Tuner.

NO		Check the 5.2VT, 5.3VA
		Line. (Power Circuit)
NO		2			NO		Check the System Circuit.
		Is I	C BUS signal applied to				(Refer to ‘SYSTEM I2C BUS
		the IC301 Pins73, 74?
							CHECK Trouble Shooting’)

YES

	NO		Chck the path of the signal
			between the IC301 Pin29
			and IC501 Pin17.

NO		Does the 12VT, 5.4VA		NO
		appear at the Emitter termi-
		nal of the Q805.
			YES
		Replace the Q805.

Check C327. (AGC)

YES

Replace the IC301.

Check the 12VT, 5.4VA

Line. (Power Circuit)

3-11

(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

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

NO

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	NO
applied to the IC301 Pin80?

YES

Is V.H.S/W “H” about 3.4V NO at the IC301 Pin80?

YES

NO

Clean the Drum.

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

Check the System Circuit.

(IC501 Pin105)

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

Replace the IC301.

Replace the IC301.

3-12

(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

NO		Check the line of the 5.2VT/
		5.3VA Line. (Power Circuit)

NO		Does the X301(4.43MHZ)	NO		Replace the X301.
		oscillate?

Does the Color signal	NO		Check the Color Pass.
appear at the IC301 Pin55?

YES

Replace the IC301.		Replace the IC301.

3-13

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

NO

Is the EE signal normal?

	YES
Is 5.2VT/5.3VA applied to the		NO
IC301 Pins4, 22, 47, 60, 84
	YES
Does PB Mdoe operate		NO
normally?
	YES
Does the RF signal appear		NO
at the IC301 Pin76?
	YES

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

YES

Check the Drum &

Drum Connector

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

YES

Replace the IC301.

3-14

5.Hi-Fi CIRCUIT

(A)No Sound(EE Mode)

	No Sound.
	YES
	Check the TU Audio of IC801	NO	Check the IC751 Pins30, 31.
	Pins2, 3.
	Check the DVD Audio of IC801	NO	Check the DVD MODULE.
	Pins4, 5.		(PMD02 Pins13, 15).
	Check the AV1 Audio of IC801	NO	Check the Scart1 Jack.
	Pins6, 7.		(SC901 Scart1 Audio in Pins2, 6).
	Check the AV2 Audio of IC801	NO	Check the Scart2 Jack.
	Pins8, 9.		(SC901 Scart2 Audio in Pins2, 6).
	Check the AV3 Audio of IC801	NO	Check the front Jack.
	Pins10, 11.		(L5F1, L5F2).
	Check the Vcc of IC801 Pins34, 40,	YES
		NO	Check the Power 5.2V, 12VT.
	IC803 Pin13.
	YES
	Check the IIC Clock and DATA at	NO	Check the IC501 Pins59, 60.
	IC801 Pins42, 43.

YES

	Check the Audio of IC801 Pins16, 17.		NO		Replace IC801.
		YES
			NO
	Check the Audio of IC803 Pins3, 5.				Replace IC803.

YES

Check the JK902.

3-15

(B) Hi-Fi Playback

PB mode

YES

No Sound.

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

Do Audio Signals appear at IC803 Pins3, 5?

YES

Do Audio Signals appear at JK902?

NO

Check Power 5.2V, 12VT.

	NO		Check IC501 Pin106
	NO		(A.H/SW)
	NO
			Check the parts of -COM
	NO		(IC501 Pins59, 60)
			Check the Connection at
	NO		P3D01 Pins7, 9.
			Check the A.IN line of
	NO		IC803(C837, C838)		NO
			Check the Vcc of IC803					Check Power.
			Pin13.
				YES
			Replace IC803.
	NO
			Check the Jack(JK902)

3-16

(C)

Hi-Fi REC.

YES

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

YES

NO

Check Vcc of IC801.(Pins34, 40)

YES

NO

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

	YES
		NO
Do Audio signals appear at IC801
Pins16, 17?
	YES
		NO
Do FM Audio signals appear at IC801
Pin36?

YES

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

Check Power 5V, 12VT.

Check ports of -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
		NO			Is +33V applied to TU701
Does the Video signal at
the TU701 Pin24.					Pin16?
						YES
	YES
					Is +5V applied to TU701
					Pin13?
						YES
					Does the Clock signal
					appear at TU701 Pin11?
						YES

NO

Check 33V line.

NO

Check 5V line.

NO		Check the lIC Clock Signal
		of -COM Pin59.

Does Sync appear at		NO
IC501 Pin111.
	YES	NO
Does the Video signal at
the IC501 Pin19.
	YES	NO
Does the Video signal at
the IC301 Pin29.
	YES	NO
Does the Video signal at
the IC802 Pin29.
	YES
Check the signal flow from
IC803 Pin6 to SC901 Pin19.

Does the data signal	NO		Check the lIC Data Signal
appear at TU701 Pin12?			of -COM Pin60.

YES

Replace Tuner.

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	NO
Check the Vcc of IC751 Pins1, 11, 19,
22, 33.
	YES	NO
Check the Tuner SiF signal at IC751
Pin2.
	YES	NO

Check the oscillator of IC751 Pins5, 6.

YES

NO

Check the Audio of IC751 Pins30, 31.

YES

NO

Check the Audio of IC801 Pins2, 3.

YES

NO

Check the Audio of IC801 Pins16, 17.

YES

NO

Check the Audio of IC803 Pins3, 5.

YES

Check the Signal flow from IC803

Pins3, 5, SC901 Pins1, 3.

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 IIC Clock and Data at IC801

Pins42, 43.

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

3-19

DVD PART

ELECTRICAL TROUBLESHOOTING GUIDE

1. -COM Circuit

A. No Power

POWER ON

YES	Does Hello	NO
	appear at FLD?

YES

Does no DISC appear?

NO

Is PDV02

YES

connected normally?

NO

Reconnect it.

NO

Does Logo appear

Check power.

on the screen?

(Refer to power)

YES

If power is

normal

OK

YES

Is PDV02 Pins8, 9,

10, 11 normal?

Refer to VCR Part

NO

1

1

NO

A

Is oscillation of

NO

The waveform

Check the oscillation

X501

normal?

on AD(0~21) of IC501

YES

normal?

YES

Are IC501

normal?

NO

Check short

NO

Are IC301 Pins5, 26 normal?

Check short.

YES

OK

YES

Replace IC501

A

Replace IC301.

Replace Main B/D.

3-52

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

OPEN/CLOSE ABNORMAL

	Check Front.
		YES (If OK)
	Check the			NO
						Reconnect it.
	connection of PDV02.
		YES

			NO
Check the connection of MD.					Check PMD03 Pins 5, 6.
	YES				YES

Refer to SERVO part.

3-53

E. Picture abnormal

PICTURE ABNORMAL

Check the disc.

Refer to Servo part

If OK

Check MPEG_CLK Signal (IC501 Pin22) of MPEG part

YES (If OK)

Check DSP

YES (If OK)

Check MPEG

YES (If OK)

Replace Main B/D

F. Disc Error

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	NO		Check power & clock.
on the screen?

YES	YES

Does the	NO				NO		Check CD/DVD DSP output
moving picture of the DVD Disc		Is MPEG data	signal normal?
play on the screen							signal.
normally?
YES		YES			OK		OK
							Check MPEG Decoder input
							signal.

YES

Is error signal normal?

NO

Check CD/DVD DSP output

signal.

OK

Check MPEG Decoder input

signal.

Does the

NO

NO

moving picture

of the video

Check CD/DVD DSP output

CD play on

the screen

Is MPEG data

signal normal?

signal.

normally?

YES

YES

OK

OPTION

Check MPEG Decoder input

_ If included VCD function.

signal.

NO

Is Clock normal?

Check clock signal

YES

NO

Does the audio

Does the

audio sound

sound output from MPEG

Check clock signal

output

normally?

decoder?

YES

YES

END

3-55

3. RF/Servo Circuit

A.

CHECK POINT(General)

	Does signal goes			NO
	"High" to IC201 Pin186		when the
	power is on?
	YES
	Does signal pulse			NO
	input to IC201 Pins53, 54 when
	the power	is on?
	YES
	Does			NO
	33.8688MHz clock		input to
	IC201 Pin138?
	YES

	Is IC201		NO
	Pins79, 80, 84, 88 voltage
	about 2.2V?
	YES
	END

Check "2. -COM Part".

Does				NO		Replace X201 or IC206
33.8688MHz clock			input
						(33MHz clock defect)
to IC201		Pin59?
YES
Replace IC201
(IC206 soldering or IC defect).

Check power circuit.

3-56