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 Confidential Unpublished Works.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