JVC HR-XV2EX User manual

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD
SERVICE MANUAL
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. 8 kg
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
DVD (PCM 48 kHz): 8 Hz to 22 kHz
CD: 8 Hz to 20 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)
More than 95 dB (CD)
Inputs (VCR)
Audi 6.0dBm, more than 10 kohms (SCART)
-6.0dBm, more than 47 kohms (RCA)
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
(C) 0.3 Vp-p 75 ohms
COMPONENT VIDEO OUT (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
Audio output (digital audio) 0 5 V (p-p), 75 Ω
Ω, 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)
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.
)4
o-
o-
e5
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 Confidential Unpublished Works.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.
No.82984
2003/06
HR-XV2E X , HR-XV2E Y ,
HR-XV2EL, HR-XV11E
X
HR-XV2EX,HR-XV2EY,HR-XV2EL,HR-XV11EX D2VP11
DVD PLAYER /VIDEO CASSETTE RECORDER
SPECIFICATIONS (The specifications shown pertain specifically to the model HR-XV2E.)
PAL
R
V V W
DVDM NU ME OR
S B I E A G E
SEA CH
S
VD O u +
VV
VC
V VCR R +
V VCR
V
2
4
79
ND M
S Y
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A

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.
Fig.1
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 com-
ply 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.
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 cath-
ode 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 or-
der 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).
Fig.7
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.
Connector
Metal sleeve
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
vPrecautions during Servicing
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.
1.25
2.0
5.5
Crimping tool
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
S40888-01

vSafety 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 compli-
ance 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’) be-
tween soldered terminals, and between terminals and surrounding metallic parts. See table 1
below.
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 accessi-
ble 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.
d'
d
Chassis Power cord,
primary wire
Region
USA & Canada
Europe & Australia
Grounding Impedance (Z)
Z 0.1 ohm
Z 0.5 ohm
≤
≤
AC inlet
Earth pin
Exposed accessible part
Milli ohm meter
Grounding Specifications
Fig. 10
ab
c
V
Externally
exposed
accessible part
Z
Fig. 9
Fig. 8
Clearance Distance (d), (d')
d, d' 3 mm
d, d' 4 mm
d, d' 3.2 mm
1 MΩR 12 MΩ/500 V DC
Dielectric Strength
AC 1 kV 1 minute
AC 1.5 kV 1 miute
AC 1 kV 1 minute
AC Line Voltage
100 V
100 to 240 V
110 to 130 V
110 to 130 V
200 to 240 V
Japan
USA & Canada
Europe & Australia R 10 MΩ/500 V DC
Region
Insulation Resistance (R)
R 1 MΩ/500 V DC
≤
≤
≥≥
≤
≤
≤≤
≤
≤
AC 3 kV 1 minute
(Class 2)
AC 1.5 kV 1 minute
(Class 1)
d 4 mm
d' 8 mm (Power cord)
d' 6 mm (Primary wire)
Table 1 Specifications for each region
a, b, cLeakage Current (i)AC Line Voltage
100 V
110 to 130 V
110 to 130 V
220 to 240 V
Japan
USA & Canada
i 1 mA rms Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
Other terminals
i 0.5 mA rms
i 0.7 mA peak
i 2 mA dc
i 0.7 mA peak
i 2 mA dc
Europe & Australia
Region Load Z
≤
≤
≤
≤
≤
≤
1 kΩ
2 kΩ
1.5 kΩ
0.15 µF
50 kΩ
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.
2S40888-01

1-5
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 1 (Y)1.0V(p-p), 75Ω, negative sync.,Mini DIN 4-pin x 1
(C)0.3V(p-p), 75Ω
Component video output (Y) 1.0 V (p-p), 75 Ω, negative sync., RCA jack x 1
(Pb)/(Pr) 0.7 V (p-p), 75 Ω
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, RCA jack (L, R) x 1/
SCART(TO TV)
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.

3-1
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

3-3
ELECTRICAL ADJUSTMENT PROCEDURES
1. Servo Adjustment
1) PG Adjustment
• Adjustment And Specification
•Test Equipment
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 theTracking(+) 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 ver-
tical 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
V.Out
H/SW R/C TRK JIG KEY 6.5 ±0.5H
MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION
V.Out
H/SW
T/P
OSCILLOSCOPE
CH1 CH2
V.outH/SW
R/C KEY
H/SW
Composite
VIDEO
6.5H(412us)
VCR PART

3-4
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 IC103.
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 IC103 Vref?
Check the Main PCB
5.3VA/5.0V Line short?
(1) No 5.3VA (SYS/TUNER)
NO 12VA.
Check or Replace
the D110.
Is the Vcc(13V) supplied
to (+) terminal in D115?
Check or Replace
the Motor Vcc.
Is the Vcc(12V) supplied
to (-) terminal in D115?
NO
NO Replace the D115.
YES
YES
YES
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.0VA.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
Is the Q162 Base
“H”?
NO
NO Check the Power
Control.
NO
Check or Replace the Q162,
R157, R158, R159, D121.
YES
YES
YES
Check or Replace
the Q162/Q160.
YES
(3) No 5.0V (SYS, Hi-Fi, TUNER, Y/C)

3-5
NO 5V.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
Is the Q162 Base
“H”?
NO
NO
NO
Check the Power
Control.
Check or Replace the Q162,
R157, R158, R159, D121.
YES
YES
YES
YES
Check or Replace
the Q162/Q160
(4) No 5V (TO DVD)
No 33V.
Check the Power
Control.
Is Q162 Base “H”?
Check or Replace
Q161, R154, R155.
NO
YES
YES
(5) No 33V (TUNER)
No REG 12V.
Check or Replace
D110.
Is 13V put into the
Q156 Collector?
Is 13V put into the
R153 Base?
NO
Check 33V Line.
NO
YES
YES
Check or Replace the Q156,
ZD103, R153, C151.
YES
(6) No REG 12V

3-5
NO 5V.
5.3VA Line Check.
Is 5.3VA put into
the Q160 Emitter?
Is about 5V put into
the Q160 Base?
Is the Q162 Base
“H”?
NO
NO
NO
Check the Power
Control.
Check or Replace the Q162,
R157, R158, R159, D121.
YES
YES
YES
YES
Check or Replace
the Q162/Q160
(4) No 5V (TO DVD)
No 33V.
Check the Power
Control.
Is Q162 Base “H”?
Check or Replace
Q161, R154, R155.
NO
YES
YES
(5) No 33V (TUNER)
No REG 12V.
Check or Replace
D110.
Is 13V put into the
Q156 Collector?
Is 13V put into the
R153 Base?
NO
Check 33V Line.
NO
YES
YES
Check or Replace the Q156,
ZD103, R153, C151.
YES
(6) No REG 12V

3-6
NO 8V.
Check or Replace
the D110.
Is Vcc(13V) supplied to
(+) terminal in D114?
Is the Q162 Base
“H”?
Is Vcc(12V) supplied
to IC151 Pin1?
NO
NO Check or Replace
the D114.
NO Check the Power
Control.
YES
YES
YES
Check or Replace
IC151, R170, C154.
YES
(7) No 8V(TO DVD)
NO 3.3V.
Is Vcc(4V) supplied
to IC152 Pin1?
YES
Is the Q162 Base
“H”?
YES
Check or Replace
IC152, R156, C153.
YES
(8) No 3.3V(TO DVD)
Check or Replace
the D111.
NO
NO Check the Power
Control.

3-7
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

3-8
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
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

3-9
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?
(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

3-10
(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

3-11
4. Y/C CIRCUIT
(1) No Video in EE Mode,
No Video in EE Mode
Check the 24Pin of Tuner.
Does the Video signal
appear at the IC301 Pin15?
Is 5V applied to the IC301
Pins4, 22, 47, 60, 84?
Does the Video signal
appear at the IC301 Pin29?
Does the Video signal
appear at the IC501 Pin19?
Does the Video signal
appear at the Emitter termi-
nal of the Q805?
Check the 5.2VT, 5.3VA
Line. (Power Circuit)
Is I
2
C BUS signal applied to
the IC301 Pins73, 74?
Check C327. (AGC)
Chck the path of the signal
between the IC301 Pin29
and IC501 Pin17.
Replace the IC301.
Does the 12VT, 5.4VA
appear at the Emitter termi-
nal of the Q805.
Replace the Q805. Check the 12VT, 5.4VA
Line. (Power Circuit)
Check the System Circuit.
(Refer to ‘SYSTEM I
2
C BUS
CHECK Trouble Shooting’)
YES
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
NO

3-12
(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?
Is the I
2
C Bus siganl applied
to the IC301 Pins73, 74 ?
Does the normal RF signal
appear at the IC301 Pin76?
Check the line of the 5.2VT,
5.3VA Line. (Power Circuit)
Check the System Circuit.
(IC501 Pin105)
Check the V.H.S/W level.
(Check R335)
Replace the IC301.
Refer to ‘SYSTEM I
2
C BUS
CHECK Trouble Shooting’.
Is the V.H.S/W signal
applied to the IC301 Pin80?
Is V.H.S/W “H” about 3.4V
at the IC301 Pin80?
Clean the Drum.
Check the path of the
Y(Luminance) RF signal.
(Check C337, C340)
Does the Y(Luminance) RF
signal appear at the IC301
Pin9?
Is the Y(Luminance) Video
waveform showed up at
theIC301 Pins49, 40?
Replace the IC301.
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES

3-13
(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?
Check the line of the 5.2VT/
5.3VA Line. (Power Circuit)
Replace the X301.
Check the Color Pass.
Does the X301(4.43MHZ)
oscillate?
Replace the IC301.
Does the Color signal
appear at the IC301 Pin55?
Replace the IC301.
NO
YES
YES
NO NO
NO
YES
Does the Color signal
appear at the IC301
Pin57 ?

3-14
(4) When the Video signal doesn’t appear on the screen in REC Mode,
Is the EE signal normal?
Is 5.2VT/5.3VA applied to the
IC301 Pins4, 22, 47, 60, 84
Does the RF signal appear
at the IC301 Pin76?
Check EE Mode.
Check the System of REC
‘H’. (the IC501 Pin47)
Replace the IC301.
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?
Check REC Luminance
Pass & Color Pass.
Does PB Mdoe operate
normally?
Does the REC RF signal
appear at the IC301
Pins80, 90?
Check the Drum &
Drum Connector
YES
YES
YES
YES
YES
NO
NO
NO
NO NO
YES
YES