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PDF CMP420V1 Data sheet ( Hoja de datos )
| Número de pieza | CMP420V1 | |
| Descripción | TV SERVICE MANUAL | |
| Fabricantes | Hitachi | |
| Logotipo |  |
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SERVICE MANUAL
YK No.009E-1
CMP420V1 / CMP420V2
42EDT41
(PW1A)
Caution
Be sure to read this manual before servicing. To assure safety from fire, electric shock, injury, harmful radiation
and materials, various measures have been provided for in this HITACHI Plasma display service manual.
Be sure to read all cautionary items described in the manual to maintain safety before servicing.
Service Warning
1. Since the Panel Module and front Filter are made of glass, handle a broken Module and/or Filter with
sufficient care, in order not to be injured.
2. Repair work should not be started until after the Panel Module and the AC/DC Power supply have cooled
sufficiently.
3. Special care should be exercised in the proximity of the display area in order not to damage its surface.
4. The Panel Module should not be touched with bare hands, as this will protect its surface from stains.
5. It is recommended to use clean soft gloves during the repair work in order to protect not only the display
area of the Panel Module but also the technician.
6. The Chip Tube of the Panel Module (located in the upper left corner of the back of the glass panel)
is very fragile; as well, the flat cables connecting the Panel to the drive circuit PWBs are very weak. Take
care not to damage these, otherwise, the panel will never light again.
Contents
1. Features ----------------------------------------------- 3
2. Specifications----------------------------------------- 4
3. Component Names --------------------------------- 5
4. Service point ------------------------------------------ 6
5. Service Modes ------------------------------------- 7
6. Troubleshooting --C--H--1------------------------------ 34
7. Block Diagram ------------------------------------ 37
8. Connector Diagram ..C...H...4............................... 40
9. Wiring Diagram .C..H...2..,..C..H...3.............................. 41
10. Basic Circuit Diagram .................................. 43
11. Printed Wiring Board Diagram ..................... 47
12. Disassembly Diagram .................................. 50
13. Replacement Parts List ................................ 51
14. DC Voltages ................................................. 53
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT.
Plasma Display
August 2004 Digital Media Division
Version 009E-1.4
1 page  
CMP420V1/CMP420V2/42EDT41 (PW1A)
3. Component names
[Main unit]
Control panel
• Adjustment buttons are located
on the bottom.
• The back cover is provided with
indications to distinguish the
adjustment buttons.
Rear Label
-+
1. SUB POWER
2. VOL
2. ADJ
3. VOL
3. ADJ
4. PROGRAM
4. SELECT
5. PROGRAM
5. SELECT
6. INPUT SELECT
6. OK
7. MENU
1 234
NOTE:
1st number indicates normal button operation
2nd number indicates function during MENU
5
OK
6
7
Remote-control
receiver
Indicating lamp
• The main power switch is located at the back, on the
lower surface.
Main power switch
[Remote control]
for
CMP420V1
CMP420V2
for
42EDT41
5
5 Page 
SERVICE MODE ACCESS
DIAGNOSIS MODE
CMP420V1 / CMP420V2 / 42EDT41 (PW1A)
DIAGNOSIS MODE
This chassis has a limited self-diagnosis mode. When activated, the microprocessor generates a series
of internal communication checks and outputs the results via OSD, as seen on the table below. Since
it uses the OSD to display the results, any circuit failures which result in a “no display” or “no pic-
ture” condition will not be able to be seen, obviously. ANY operation (volume, channel, menu, input,
etc.) will cause the unit to exit from the Diagnosis mode.
Diagnosis Mode
With unit in standby mode
(turned off), press and hold: >
Codes
15
Results
After the unit comes on, continue to hold the
buttons down until the initial OSD goes
away. OSD will then appear indicating that
the DIAGNOSIS MODE is engaged.
Diagnosis
H11: OK
H16: OK
H32: OK
H15: OK
H31: OK
H33: OK
F63 F63 - - - - - - - - -
Most Recent Failure
Code
Problem
Phenomenon
Cause
H11* Tuner problem
Can not receive the main signal from antenna
U101 error
H15 Composite video SW IC problem Can not receive picture and audio - can not change input mode I201 error
H16 Component video SW IC problem No component picture - can not change input mode
I202 error
H31 Color Demodulator IC problem
Abnormal color - dark picture
I501 error
H32 Sync separator IC problem
Unsynchronized picture
I601 error
H33 3D Y/C separator problem
F63 I2C Bus latch problem
* Only with units having a tuner circuit
Abnormal color - dark picture/no picture
Can’t store data settings
I302 error
SDA3/SCL3
latched up
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet CMP420V1.PDF ] | |
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