MITSUBISHI V27 Service Manual

Cover page of MITSUBISHI V27 Service Manual

Service Manual for MITSUBISHI V27, downloadable as a PDF file.

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CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2005 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHIELECTRIC Ser
Ser
Ser
Ser
Service
vice
vice
vice
vice
Manual
Manual
Manual
Manual
Manual
2005
2005
2005
2005
2005
PROJECTION TELEVISION
V27 CHASSIS
SPECIFICATIONS
· Power Input
: AC 120V, 60Hz
· Power Usage
: 275W
300W [WS-65517/ WS-73517]
· Frequency Range
: VHF 54 ~ 470MHz
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
1 - NTSC.ATSC/QAM
1 -NTSC for PIP
· CRT Size
: [7 inches] WS-55517/WS-65517
: [9 inches] WS-73517
· High Voltage
: 32.0kV (at 0A)
· Speakers (8 Ohms 10W)
: 2 - 6" full range
· 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
: IEEE-1394 I/O Jacks
Interface
: AC-3 Digtal Audio Output
: HDMI
: CableCARD
: System 5 IR
: USB Service Port
V27 MODELS
WS-55517
WS-65517
WS-73517
WS-55517
Model
Weight
Height
Width
Depth
WS-55517
221 lbs
50.7 in.
50.4in.
28 in.
WS-65517
292 lbs
62 in.
59 in.
28 in.
WS-73517
383 lbs
66.3 in.
65.9 in.
30 in.
Cabinet Weight & Demensions
background image
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and
"PRODUCT SAFETY NOTICE" contained in this manual.
· Weight and dimensions shown are approximate.
· Design specifications are subject to change without notice.
MITSUBISHI DIGITAL ELECTRONICS AMERICA, INC.
9351 Jeronimo Road, Irvine, CA 92618-1904
Copyright © 2005 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MITSUBISHIELECTRIC Ser
Ser
Ser
Ser
Service
vice
vice
vice
vice
Manual
Manual
Manual
Manual
Manual
2005
2005
2005
2005
2005
PROJECTION TELEVISION
V27 CHASSIS
SPECIFICATIONS
· Power Input
: AC 120V, 60Hz
· Power Usage
: 275W
300W [WS-65517/ WS-73517]
· Frequency Range
: VHF 54 ~ 470MHz
UHF 470 ~ 806MHz
· Antenna Input
: VHF/UHF 75
unbalanced
1 - NTSC.ATSC/QAM
1 -NTSC for PIP
· CRT Size
: [7 inches] WS-55517/WS-65517
: [9 inches] WS-73517
· High Voltage
: 32.0kV (at 0A)
· Speakers (8 Ohms 10W)
: 2 - 6" full range
· 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
: IEEE-1394 I/O Jacks
Interface
: AC-3 Digtal Audio Output
: HDMI
: CableCARD
: System 5 IR
: USB Service Port
V27 MODELS
WS-55517
WS-65517
WS-73517
WS-55517
Model
Weight
Height
Width
Depth
WS-55517
221 lbs
50.7 in.
50.4in.
28 in.
WS-65517
292 lbs
62 in.
59 in.
28 in.
WS-73517
383 lbs
66.3 in.
65.9 in.
30 in.
Cabinet Weight & Demensions
background image
background image
MODELS: WS-55517 / WS-65517 / WS-73517
Page 3
INTRODUCTION ................................................................................................................................5
PRODUCT SAFETY NOTICE ............................................................................................................. 5
SAFETY PRECAUTIONS ................................................................................................................... 6
DISASSEMBLY PROCEDURES ......................................................................................................... 7
Cabinet Disassembly (Front) .................................................................................................. 7
Cabinet Disassembly (Rear) .................................................................................................. 8
SERVICING THE LENTICULAR LENS AND FRESNEL SCREEN ....................................................... 9
Removal of the Lenticular Screen and Fresnel Lens ........................................................................ 9
Installation of the Lenticular Screen and Fresnel Lens ................................................................... 10
DIAMONDSHIELDTM Removal and Installation ............................................................................. 11
CABINET SEPARATION PROCEDURES
WS-65517 / WS-73517 Cabinet Separation .................................................................................. 12
SERVICING PCBs ............................................................................................................................ 12
Chassis Removal .......................................................................................................................... 12
PCB Locations .............................................................................................................................. 13
Major Parts Locations ................................................................................................................... 13
CRT REPLACEMENT ....................................................................................................................... 14
CRT Removal ................................................................................................................................14
CRT Installation ............................................................................................................................ 15
ELECTRICAL ADJUSTMENTS ........................................................................................................ 17
Equipment and Initial Setup .......................................................................................................... 17
Initial Setup ................................................................................................................................... 18
LED Indicator Diagnostics ............................................................................................................. 19
Remote Control Operational Mode ................................................................................................ 19
Circuit Adjustment Mode ............................................................................................................... 20
Service Mode Reset ...................................................................................................................... 21
Convergence Adjustment Mode ..................................................................................................... 21
Adjustment Items List ................................................................................................................... 23
Adjustment Procedures ................................................................................................................ 26
Test Point Locations ............................................................................................................26
Main / Sub Y Level & HV Regulation .................................................................................... 27
Main / Sub Color Level & CRT Cutoff .................................................................................... 28
White Balance (NTSC) & White Balance (HD) ..................................................................... 29
Black Level & Sub Contrast ................................................................................................. 30
Dynamic Focus Presets & Lens Focus ................................................................................ 31
Alignment Magnet / Electrostatic Focus & Character Position ............................................. 32
Geometry Presets ............................................................................................................... 33
Deflection Geometry Adjustments ........................................................................................ 34
Convergence Geometry Adjustments ................................................................................... 35
Centering & Static Convergence ........................................................................................... 36
Coarse Convergence Adjustments ........................................................................................ 37
Fine Convergence Adjustments ............................................................................................ 38
CONTENTS
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Page 4
MODELS: WS-55517 / WS-65517 / WS-73517
CHIP PARTS REPLACEMENT ......................................................................................................... 39
REPLACEMENT PARTS .................................................................................................................. 40
Parts Ordering .............................................................................................................................. 40
Critical and Warranty Parts Designation........................................................................................ 40
Parts Tolerance Codes .................................................................................................................. 40
Quick Reference List .................................................................................................................... 41
SERVICE PARTS LIST .................................................................................................................... 42
SCREEN ASSEMBLY PARTS LIST .................................................................................................. 55
CIRCUITRY BLOCK DIAGRAMS ..................................................................................................... 56
Part 2
V25/V27 Schematic Diagrams
CONTENTS
Page
SCHEMATIC DIAGRAMS
PWB Interconnect Diagram............................................................................................................. 1
PWB-MAIN (Power Supply / Horizontal Deflection / HV) ................................................................ 2
PWB-TERMINAL -1 (Input Switch) .................................................................................................. 3
PWB-TERMINAL 2 (PIC µPC / FIF /E2P) ....................................................................................... 4
PWBs-CRT / CONTROL / FRONT / PREAMP / SVM / DBF ........................................................... 5
HDMI .............................................................................................................................................. 6
PWB-SIGNAL-1 (MICRO) ............................................................................................................... 7
PWB-SIGNAL-2 (Convergence Generator) ....................................................................................... 8
PWB-SIGNAL-3 (VCJ / Vertical Deflection / Audio)) ........................................................................ 9
PWB-TUNER-1 (Tuners / Audio) .................................................................................................... 10
PWB-TUNER-2 (Demodulator) ...................................................................................................... 12
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Page 5
MODELS:
WS-55517 / WS-65517 / WS-73517
INTRODUCTION
This service manual provides service instructions for projection TV models WS-55517, WS-65517 and WS-73517
using the V27 chassis. 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.

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