MITSUBISHI WS48313 Service Manual

Cover page of MITSUBISHI WS48313 Service Manual

Service Manual for MITSUBISHI WS48313, downloadable as a PDF file.

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MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2003 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
2003
Weight and dimensions shown are approximate.
Design specifications are subject to change without notice.
PROJECTION TELEVISION
V22 / V22+ 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-48313 / WS-48413]
Two 5" round, full range (8
10W)
: [WS-55313 / WS-55413 / WS-65313/
WS-65413]
Two 6" round, full range (8
10W)
Weight / Cabinet Demensions
· 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
V22 Chassis
MODELS
WS-48313
WS-55313
WS-65313
V22+ Chassis
MODELS
WS-48413
WS-55413
WS-65413
WS-48313
Model
Weight
Height
Width
Depth
WS-48313
172 lbs
49"
44.5"
24"
WS-48413
172lbs
49"
44.5"
24"
WS-55313
213 lbs
50.4"
50.5"
25.4"
WS-55413
221 lbs
50.4"
50.5"
27.8"
WS-65313
327 lbs
62"
59"
28"
WS-65413
327 lbs
62"
59"
28"
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MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2003 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
2003
Weight and dimensions shown are approximate.
Design specifications are subject to change without notice.
PROJECTION TELEVISION
V22 / V22+ 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-48313 / WS-48413]
Two 5" round, full range (8
10W)
: [WS-55313 / WS-55413 / WS-65313/
WS-65413]
Two 6" round, full range (8
10W)
Weight / Cabinet Demensions
· 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
V22 Chassis
MODELS
WS-48313
WS-55313
WS-65313
V22+ Chassis
MODELS
WS-48413
WS-55413
WS-65413
WS-48313
Model
Weight
Height
Width
Depth
WS-48313
172 lbs
49"
44.5"
24"
WS-48413
172lbs
49"
44.5"
24"
WS-55313
213 lbs
50.4"
50.5"
25.4"
WS-55413
221 lbs
50.4"
50.5"
27.8"
WS-65313
327 lbs
62"
59"
28"
WS-65413
327 lbs
62"
59"
28"
background image
background image
MODELS: WS-48313 / WS-48413 / WS-55313 / WS-55413 / WS-65313 / WS-65413
Page 3
INTRODUCTION ............................................................................................................................... 5
PRODUCT SAFETY NOTICE ...........................................................................................................5
SAFETY PRECAUTIONS ................................................................................................................. 6
DISASSEMBLY PROCEDURES ......................................................................................................... 7
WS-48313 / WS-48413
Front Cabinet Components .................................................................................................... 7
Rear Cabinet Components ..................................................................................................... 8
WS-55313 / WS-55413 / WS-65313 / WS-65413
Front Cabinet Components .................................................................................................... 9
Rear Cabinet Components ................................................................................................... 10
SERVICING THE LENTICULAR LENS AND FRESNEL SCREEN ................................................ 11
WS-48313 / WS-48413
Removal of the Lenticular Screen and Fresnel Lens .......................................................... 11
WS-55313 / WS-55413 / WS-65313 / WS-65413
Removal of the Lenticular Screen and Fresnel Lens .......................................................... 12
All Models
Installation of the Lenticular Screen and Fresnel Lens ....................................................... 13
CABINET SEPARATION PROCEDURES .......................................................................................... 14
WS-65313 / WS-65413 ................................................................................................................. 14
SERVICING THE DIAMONDSHIELDSTMr ........................................................................................ 15
DiamondShields TM Removal ......................................................................................................... 15
DiamondShields TM 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
ConvergenceAdjustment Mode ..................................................................................................... 24
Adjustment Items List ................................................................................................................... 26
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
CONTENTS
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MODELS: WS-48313 / WS-48413 / WS-55313 / WS-55413 / WS-65313 / WS-65413
Page 4
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 GeometryAdjustments ................................................................................... 38
Centering & Static Convergence ........................................................................................... 39
Coarse Convergence Adjustments ........................................................................................ 40
Fine ConvergenceAdjustments ............................................................................................ 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 ..................................................................................................... 60
Part 2
Schematic Diagrams
CONTENTS
Page
SCHEMATIC DIAGRAMS
PCB Interconnect Diagram .............................................................................................................. 1
PCB-MAIN ...................................................................................................................................... 2
PCB-POWER ................................................................................................................................. 3
PCB-SIGNAL-1 (TUNER I/O) ........................................................................................................... 4
PCB-SIGNAL-2 (MICRO)................................................................................................................. 5
PCB-SIGNAL-3 (VIDEO / CHROMA) ............................................................................................... 6
PCB-SIGNAL-4 (CONVERGENCE GENERATOR) .......................................................................... 7
PCB-DOUBLER-1 ........................................................................................................................... 8
PCB-DOUBLER-2 ........................................................................................................................... 9
PCB-DOUBLER-3 ......................................................................................................................... 10
PCB-TERMINAL-1 (A/V I/O) .......................................................................................................... 11
PCB-TERMINAL-2 (MonLink) ........................................................................................................ 12
PCBsCRT, CONTROL, FRONT and PREAMP .............................................................................. 13
PCB LAYOUT DIAGRAMS ............................................................................................................... 14
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MODELS: WS-48313 / WS-48413 / WS-55313 / WS-55413 / WS-65313 / WS-65413
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.
V22 Chassis
V22+ Chassis
WS-48313
WS-48413
WS-55313
WS-55413
WS-65313
WS-65413

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