MITSUBISHI WS55315 Service Manual

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Service Manual for MITSUBISHI WS55315, downloadable as a PDF file.

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MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2004 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
MITSUBISHIELECTRIC
Service
Manual
2004
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
PROJECTION TELEVISION
V24 CHASSIS
SPECIFICATIONS
· Power
: AC 120V, 60Hz
240W
· Frequency
: VHF
54 ~ 470MHz
Range
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
·
CRT Size
: 7 inches
·
High Voltage
: 30.8KV
· Speakers
: [WS-48315]
Two 5" round, full range (8
10W)
: [WS-55315 / 65315]
Two 6" round, full range (8
10W)
·
Weight / Cabinet Dimensions
· Input Level
: VIDEO IN JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO IN JACK (RCA Type)
-4.7dBm 43k
unbalanced
: S-VIDEO IN JACK (Y/C separate)
Y=1.0 Vp-p C=0.286Vp-p(BURST)
75
unbalanced
: COMP / Y, Cr, Cb (RCA Type)
Y=1.0 Vp-p. Cr, Cb=700mVp-p
: DTV / Y(G), Pr(R), Pb(B), H, V
Y 1.0Vp-p with sync 75
(RCA Type)
Pr, Pb: 700mV 75
H, V: 3.0Vp-p 75
· Digital Inputs
:MonitorLinkTM/DVI
:MonitorLinkTM Control/RS-232C
· Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO OUT JACK (RCA
Type)
-4.7dBm 4.7k
unbalanced
V24 Chassis
MODELS
WS-48315
WS-55315
WS-65315
WS-48315
Model
Weight
Height
Width
Depth
WS-48315
172lbs
49"
44.5"
24"
WS-55315
221 lbs
50.4"
50.5"
27.8"
WS-65315
327 lbs
62"
59"
28"
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MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2004 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
MITSUBISHIELECTRIC
Service
Manual
2004
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
PROJECTION TELEVISION
V24 CHASSIS
SPECIFICATIONS
· Power
: AC 120V, 60Hz
240W
· Frequency
: VHF
54 ~ 470MHz
Range
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
·
CRT Size
: 7 inches
·
High Voltage
: 30.8KV
· Speakers
: [WS-48315]
Two 5" round, full range (8
10W)
: [WS-55315 / 65315]
Two 6" round, full range (8
10W)
·
Weight / Cabinet Dimensions
· Input Level
: VIDEO IN JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO IN JACK (RCA Type)
-4.7dBm 43k
unbalanced
: S-VIDEO IN JACK (Y/C separate)
Y=1.0 Vp-p C=0.286Vp-p(BURST)
75
unbalanced
: COMP / Y, Cr, Cb (RCA Type)
Y=1.0 Vp-p. Cr, Cb=700mVp-p
: DTV / Y(G), Pr(R), Pb(B), H, V
Y 1.0Vp-p with sync 75
(RCA Type)
Pr, Pb: 700mV 75
H, V: 3.0Vp-p 75
· Digital Inputs
:MonitorLinkTM/DVI
:MonitorLinkTM Control/RS-232C
· Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO OUT JACK (RCA
Type)
-4.7dBm 4.7k
unbalanced
V24 Chassis
MODELS
WS-48315
WS-55315
WS-65315
WS-48315
Model
Weight
Height
Width
Depth
WS-48315
172lbs
49"
44.5"
24"
WS-55315
221 lbs
50.4"
50.5"
27.8"
WS-65315
327 lbs
62"
59"
28"
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MODELS: WS-48315 / WS-55315 / WS-65315
Page 3
INTRODUCTION .................................................................................................................................. 5
PRODUCT SAFETY NOTICE ............................................................................................................ 5
SAFETY PRECAUTIONS................................................................................................................... 6
DISASSEMBLY PROCEDURES .......................................................................................................... 7
WS-48315
Front Cabinet Components ..................................................................................................... 7
Rear Cabinet Components ...................................................................................................... 8
WS-55315 / WS-65315
Front Cabinet Components ..................................................................................................... 9
Rear Cabinet Components .................................................................................................... 10
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS ...................................................... 11
WS-48315
Removal of the Lenticular Screen and Fresnel Lens ............................................................... 11
WS-55315 / WS-65315
Removal of the Lenticular Screen and Fresnel Lens .............................................................. 12
Installation of the Lenticular Screen and Fresnel Lens ................................................................... 13
CABINET SEPARATION PROCEDURES ........................................................................................... 14
WS-65315 ...................................................................................................................................... 14
SERVICING THE DIAMONDSHIELDTM ............................................................................................. 15
DiamondShield Removal ................................................................................................................. 15
DiamondShield Installation ............................................................................................................. 15
SERVICING PCBs ............................................................................................................................. 16
Chassis Removal ........................................................................................................................... 16
PCB Locations ............................................................................................................................... 16
Major Parts Locations .................................................................................................................... 16
ANODE LEAD REMOVAL .................................................................................................................. 17
CRT REPLACEMENT ........................................................................................................................ 17
CRT Removal ................................................................................................................................. 17
CRT Installation .............................................................................................................................. 18
ELECTRICAL ADJUSTMENTS ....................................................................................................... 20
Equipment ..................................................................................................................................... 20
Initial Setup .................................................................................................................................... 21
LED Indicator Diagnostics .............................................................................................................. 22
Circuit Adjustment Mode ................................................................................................................ 23
Convergence Adjustment Mode ...................................................................................................... 24
Adjustment Items List .................................................................................................................... 26
CONTENTS
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MODELS: WS-48315 / WS-55315 / WS-65315
Page 4
Adjustment Procedures .................................................................................................................. 29
Test Point Locations ............................................................................................................. 29
HV Regulation ....................................................................................................................... 30
Main / Sub Y Level ................................................................................................................ 30
Main / Sub Color Level .......................................................................................................... 31
CRT Cutoff ............................................................................................................................. 31
White Balance (NTSC) .......................................................................................................... 32
White Balance (HD) .............................................................................................................. 32
Black Level............................................................................................................................ 33
Sub Contrast ......................................................................................................................... 33
Dynamic Focus Presets ....................................................................................................... 34
Lens Focus ........................................................................................................................... 34
Alignment Magnet & Electrostatic Focus .............................................................................. 35
Charactrer Position ............................................................................................................... 35
Geometry Presets ................................................................................................................. 36
Deflection Geometry Adjustments ......................................................................................... 37
Convergence Geometry Adjustments .................................................................................... 38
Centering & Static Convergence ............................................................................................ 39
Coarse Convergence Adjustments ........................................................................................ 40
Fine Convergence Adjustments ............................................................................................. 41
MonitorLink Picture Position ................................................................................................. 41
CHIP PARTS REPLACEMENT .......................................................................................................... 42
REPLACEMENT PARTS .................................................................................................................... 43
Parts Ordering ................................................................................................................................ 43
Critical and Warranty Parts Designation ........................................................................................ 43
Parts Tolerance Codes ................................................................................................................... 43
Quick Reference List ...................................................................................................................... 44
SERVICE PARTS LIST ..................................................................................................................... 45
SCREEN ASSEMBLY PARTS LIST ................................................................................................... 57
CIRCUITRY BLOCK DIAGRAMS ...................................................................................................... 59
Part 2
Schematic Diagrams
CONTENTS
Page
SCHEMATIC DIAGRAMS
PCB INTERCONNECT BLOCK DIAGRAM ....................................................................................... 1
PCB-MAIN ....................................................................................................................................... 2
PCB-POWER ................................................................................................................................... 3
PCB-TERMINAL-1 (A/V I/O) ............................................................................................................. 4
PCB-TERMINAL-2 (DVI), DOUBLER-3 ............................................................................................. 5
PCB-CRT, CONTROL, FRONT and PREAMP .................................................................................. 6
PCB-SIGNAL-1 (TUNER I/O) ............................................................................................................ 7
PCB-SIGNAL-2 (MICRO) .................................................................................................................. 8
PCB-SIGNAL-3 (VIDEO / CHROMA)................................................................................................ 9
PCB-SIGNAL-4 (CONVERGENCE GENERATOR) ......................................................................... 10
PCB-DOUBLER-1 ........................................................................................................................... 11
PCB-DOUBLER-2 .......................................................................................................................... 12
PCB LAYOUT DIAGRAMS ................................................................................................................ 13
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MODELS: WS-48315 / WS-55315 / WS-65315
Page 5
INTRODUCTION
This service manual provides service instructions for the PTV Models listed below. Service personnel should read this
manual thoroughly before servicing these chassis.
This service manual includes:
1. Assembly and disassembly instructions for the front and rear cabinet components.
2. Servicing of the Lenticular Screen and Fresnel Lens.
3. Servicing printed circuit boards (PCBs).
4. CRT replacement procedure.
5. Electrical adjustments.
6. Chip parts replacement procedures.
7. Circuit path diagrams.
The parts list section of this service manual includes:
1. Cabinet and screen parts.
2. Electrical parts.
Schematic and block diagrams of the above listed models are included in this service manual for better under-
standing of the circuitry. PCB drawings are also included for easy location of parts and test points.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in television receivers have special safety related characteristics. These
characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be
obtained by using replacement components rated for higher voltage, wattage, etc.
Replacement parts which have special safety characteristics are identified in this service manual.
Electrical components having such features are identified by shading
on the schematic diagram and by bold
type in the parts list of this service manual. The replacement for any safety part should be identical in value
and characteristics.
V24 Cha ssis
WS -48315
WS -55315
WS -65315

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