MITSUBISHI WS48511 Service Manual

Cover page of MITSUBISHI WS48511 Service Manual

Service Manual for MITSUBISHI WS48511, downloadable as a PDF file.

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MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2002 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHIELECTRIC
Service
Manual
2002
2002
2002
2002
2002
PROJECTION TELEVISION
V21 / V21+ / V21++ CHASSIS
SPECIFICATIONS
· Power Input
: AC 120V, 60Hz
· Power Usage
: 275W (All but WS-73711)
300W (WS-73711 only)
· Frequency Range
: VHF
54 ~ 470MHz
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
2 - NTSC
1 - ATV/QAM
·
CRT Size
: [7 inches]
: [9 inches] WS-73711 only
·
High Voltage
: 32.0kV (at 0A)
· Cabinet Weight and Demensions
·
Speakers (8 Ohms 10W)
[WS-48511]
: 2 - 5" round
[WS-B55 / WS-55511 / WS-65511 / WS-65611]
: 2 - 6" round
[WS-55711 / WS-65711 / WS-73711]
: 2 - 6.5" round, 2 - 3" tweeters
[WS-65712]
: 2 - 7" oval, 2 - 3" tweeters
·
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 type)
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
: ATV / Y(G), Pr(R), Pb(B), H, V
Y: 1.0Vp-p with sync 75
(BNC)
Pr, Pb: 700mV 75
H, V: 3.0Vp-p 75
: VGA / R,G,B,V,H (15 pin D)
·
Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO OUT JACK (RCA Type)
-4.7dBm 4.7k
unbalanced
·
Digital Interface
: IEEE-1394 I/O Jacks
: AC-3® Digtal Audio Output
V21
MODELS
WS-48511
WS-55511
WS-65511
WS-B55
V21+
MODELS
WS-65611
WS-65611
V21++
MODELS
WS-55711
WS-65711
WS-65712
WS-73711
Model
Weight
Height Width Depth
WS-48511 175.5 lbs.
49"
44.5"
24"
WS-55511 238 lbs.
50.3"
50.6"
28"
WS-55711 266 lbs.
50.3"
50"
28"
WS-65511 337 lbs.
61.9"
59"
28.1"
WS-65611 336.5 lbs
61.9"
59"
28.1"
WS-65711
356 lbs
61.6"
58.2"
28"
WS-65712 251 lbs.
61.7"
58.2"
28.4"
WS-73711
410 lbs
65.7"
65.2"
30"
WS-B55
238 lbs.
50.3"
50.6"
28"
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
· AC-3® is a registered trademark of Dolby Laboratories, Inc.
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
background image
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2002 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHIELECTRIC
Service
Manual
2002
2002
2002
2002
2002
PROJECTION TELEVISION
V21 / V21+ / V21++ CHASSIS
SPECIFICATIONS
· Power Input
: AC 120V, 60Hz
· Power Usage
: 275W (All but WS-73711)
300W (WS-73711 only)
· Frequency Range
: VHF
54 ~ 470MHz
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
2 - NTSC
1 - ATV/QAM
·
CRT Size
: [7 inches]
: [9 inches] WS-73711 only
·
High Voltage
: 32.0kV (at 0A)
· Cabinet Weight and Demensions
·
Speakers (8 Ohms 10W)
[WS-48511]
: 2 - 5" round
[WS-B55 / WS-55511 / WS-65511 / WS-65611]
: 2 - 6" round
[WS-55711 / WS-65711 / WS-73711]
: 2 - 6.5" round, 2 - 3" tweeters
[WS-65712]
: 2 - 7" oval, 2 - 3" tweeters
·
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 type)
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
: ATV / Y(G), Pr(R), Pb(B), H, V
Y: 1.0Vp-p with sync 75
(BNC)
Pr, Pb: 700mV 75
H, V: 3.0Vp-p 75
: VGA / R,G,B,V,H (15 pin D)
·
Output Level
: VIDEO OUT JACK (RCA Type)
1.0Vp-p 75
unbalanced
: AUDIO OUT JACK (RCA Type)
-4.7dBm 4.7k
unbalanced
·
Digital Interface
: IEEE-1394 I/O Jacks
: AC-3® Digtal Audio Output
V21
MODELS
WS-48511
WS-55511
WS-65511
WS-B55
V21+
MODELS
WS-65611
WS-65611
V21++
MODELS
WS-55711
WS-65711
WS-65712
WS-73711
Model
Weight
Height Width Depth
WS-48511 175.5 lbs.
49"
44.5"
24"
WS-55511 238 lbs.
50.3"
50.6"
28"
WS-55711 266 lbs.
50.3"
50"
28"
WS-65511 337 lbs.
61.9"
59"
28.1"
WS-65611 336.5 lbs
61.9"
59"
28.1"
WS-65711
356 lbs
61.6"
58.2"
28"
WS-65712 251 lbs.
61.7"
58.2"
28.4"
WS-73711
410 lbs
65.7"
65.2"
30"
WS-B55
238 lbs.
50.3"
50.6"
28"
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
· AC-3® is a registered trademark of Dolby Laboratories, Inc.
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
background image
background image
MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55
Page 3
INTRODUCTION ................................................................................................................................5
PRODUCT SAFETY NOTICE ............................................................................................................. 5
SAFETY PRECAUTIONS ................................................................................................................... 6
DISASSEMBLY
WS-48511 Cabinet Front Disassembly ............................................................................................ 7
WS-48511 Cabinet Rear Disassembly ............................................................................................ 8
WS-B55 / WS-55511 / WS-65511 Cabinet Front Disassembly ........................................................ 9
WS-65611 Cabinet Front Disassembly .......................................................................................... 10
WS-55711 / WS-65711 / WS-73711 Cabinet Front Disassembly ................................................... 11
WS-B55 / WS-55511 / WS-65511 / WS-65611 / WS-55711 / WS-65711 / WS-73711
Cabinet Rear Disassembly ................................................................................................... 12
WS-65712 Cabinet Front Disassembly ......................................................................................... 13
WS-65712 Cabinet Rear Disassembly .......................................................................................... 14
SERVICING THE LENTICULAR SCREEN AND FRESNEL LENS
Lenticular Screen and Fresnel Lens Removal ......................................................................... 15
WS-48511 ............................................................................................................................ 15
WS-B55 / WS-55511 / WS-65511 ........................................................................................ 16
WS-55711 / WS-65611 / WS65711 / WS-65712 / WS-73711 ............................................... 17
Lenticular Screen and Fresnel Lens Installation .................................................................... 18
SERVICING THE DIAMONDSHIELDSTM r
DiamondShield TM Removal & Installation ...................................................................................... 19
CABINET SEPARATION (65 and 73 inch)
WS-65712 ..................................................................................................................................... 20
WS-65511 ..................................................................................................................................... 21
WS-65611 / WS-65711 / WS-73711 .............................................................................................. 21
SERVICING PCBs
Chassis and DM Module Removal ................................................................................................. 22
PCB Locations .............................................................................................................................. 23
Main Components Location ........................................................................................................... 23
DM Module Main Components Location ........................................................................................ 24
CRT REPLACEMENT
CRT Removal ................................................................................................................................25
CRT Installation ............................................................................................................................ 26
ELECTRICAL ADJUSTMENTS
Test Equipment ............................................................................................................................. 28
Initial Setup ................................................................................................................................... 29
LED Indicator Diagnostics ............................................................................................................. 30
Remote Control Operational Mode ................................................................................................ 30
Circuit Adjustment Mode ............................................................................................................... 31
On Screen Display Position Adjustment Mode .............................................................................. 32
Convergence Adjustment Mode ..................................................................................................... 32
E2PROM Replacement ................................................................................................................. 34
Adjustment Items List ................................................................................................................... 34
Adjustment Test Points ................................................................................................................. 37
Adjustment Procedures ................................................................................................................ 38
Audio Circuit ........................................................................................................................ 38
High Voltage Regulation ....................................................................................................... 39
Main/Sub Y Level ................................................................................................................. 39
Side by Side Sub Picture Tint .............................................................................................. 40
Side by Side Sub Picture Color ............................................................................................ 40
CONTENTS
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MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55
Page 4
CRT Cutoff ........................................................................................................................... 41
White Balance (NTSC) ......................................................................................................... 41
White Balance (HD) ............................................................................................................. 42
Cb, Cr Offset ........................................................................................................................ 42
Black Level .......................................................................................................................... 43
Sub Contrast ....................................................................................................................... 43
Dynamic Focus Preset ........................................................................................................ 44
Lens Focus .......................................................................................................................... 44
Electrostatic Focus & Alignment Magnet Adjustment .......................................................... 45
On Screen Display Character Position ................................................................................. 45
Deflection/Convergence Geometry Presets .......................................................................... 46
Deflection Circuit Geometry Adjustments ............................................................................. 47
Convergence Circuit Geometry Adjustments ........................................................................ 48
Centering and Static Convergence ....................................................................................... 49
Coarse Convergence Adjustments ....................................................................................... 50
Fine Convergence Adjustments ............................................................................................ 51
CHIP PARTS REPLACEMENT ......................................................................................................... 52
REPLACEMENT PARTS
Parts Ordering .............................................................................................................................. 53
Critical and Warranty Parts Designation ........................................................................................ 53
Parts Tolerance Codes .................................................................................................................. 53
Quick Reference List .................................................................................................................... 54
Service Parts List .......................................................................................................................... 55
Screen Parts List .......................................................................................................................... 70
CIRCUITRY BLOCK DIAGRAMS
Standby Supplies Regulator .......................................................................................................... 74
Switched Supplies Regulator ........................................................................................................ 75
DM Power Supply ......................................................................................................................... 76
Video / Color A/V Switch Circuit ................................................................................................... 77
Video / Color Signal Path .............................................................................................................. 78
Sync Signal Path .......................................................................................................................... 79
Deflection / HV .............................................................................................................................. 80
X-Ray Protect ............................................................................................................................... 80
Sound Circuit ................................................................................................................................ 81
Convergence ................................................................................................................................. 82
Control Circuitry ............................................................................................................................ 83
Section 2 .... Schematic Diagrams
SCHEMATIC DIAGRAMS
Overall Block Diagram ................................................................................................................... 1
PCB-MAIN ..................................................................................................................................... 2
PCB-POWER ................................................................................................................................. 3
PCB-TERMINAL ............................................................................................................................ 4
PCB-SIGNAL-1 (AV I/O) .................................................................................................................. 5
PCB-SIGNAL-2 (MICRO) ................................................................................................................. 6
PCB-SIGNAL-3 (VIDEO / CHROMA) ............................................................................................... 7
PCB-3DYC ..................................................................................................................................... 8
PCBs-CONV GEN / JUNGLE ..........................................................................................................9
PCBs - CRT / CONTROL / SVM / DBF / DM POWER .................................................................. 10
PCB-2HDW-1 ............................................................................................................................... 11
PCB-2HDW-2) .............................................................................................................................. 12
PCB-2HDW-3 ............................................................................................................................... 13
PCB LAYOUT DIAGRAMS ............................................................................................................... 14
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Page 5
MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55
INTRODUCTION
This service manual provides service instructions for the V21, V21+ and V21++ PTV chassis types. The specific
models for each chassis type are 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.
V21 Chassis
V21+ Chassis
V21++ Chassis
WS-48511
WS-65611
WS-55711
WS-55511
WS-65711
WS-65511
WS-65712
WS-B55
WS-73711

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