Service2001
MITSUBISHIELECTRIC Manual
PROJECTION TELEVISION
V17+++ CHASSIS
V17+++
MODELS
WS-55908
WS-65908
PARTS LIST ONLY
For Disassembly, Adjustments,Schematics, etc., refer to the service manual covering V17, V17+ and V17++ models.
P/N: S/M WS55807 (Paper) SM/CD WS55807 (CD-ROM)
CAUTION:
Before servicing this chassis, it is important that the service person read the "SAFETY PRECAUTIONS" and "PRODUCT SAFETY NOTICE" contained in the service manual.
SPECIFICATIONS
• Power |
: AC 120V, 60Hz, 320W |
|
• Frequency |
: VHF |
54 ~ 470MHz |
Range |
UHF |
470 ~ 806MHz |
• Antenna Input |
: VHF/UHF 75Ω unbalanced |
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|
Single axis input |
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• CRT Size |
: 7 inches |
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• High Voltage |
: 32.0kV (at 0A) |
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• Speaker |
: 5" round type, full range 2 pcs. (8Ω 10W) |
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2" round type, tweeter 2 pcs. (8Ω 10W) |
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• Weight |
: [WS-55908] 302 lbs |
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: [WS-65908] 375 lbs |
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• Cabinet |
: [Model] (H)x(W)x(D) |
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Dimensions |
: [WS-55908] 51.5"x49.9"x28.1" |
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: [WS-65908] 61.6"x58.2"x28.2" |
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• Input Level : VIDEO IN JACK (RCA Type) 1.0Vp-p 75Ω unbalanced
:AUDIO IN JACK (RCA Type) -4.7dBm 43kΩ unbalanced
:S-VIDEO IN JACK (Y/C separate type)
Y:1.0 Vp-p C:0.286Vp-p(BURST) 75Ω unbalanced
:DVD / 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 75Ω (BNC) Pr, Pb: 700mV 75Ω
H, V: 3.0Vp-p 75Ω
•Output Level : VIDEO OUT JACK (RCA Type)
1.0Vp-p 75Ω unbalanced
:AUDIO OUT JACK (RCA Type) -4.7dBm 4.7kΩ unbalanced
•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 © 2001 Mitsubishi Digital Electronics America, Inc.
All Rights Reserved
MODELS: WS-55908 / WS-65908
CONTENTS |
|
CHIP PARTS REPLACEMENT ........................................................................................................... |
5 |
REPLACEMENT PARTS .................................................................................................................... |
6 |
Parts Ordering .............................................................................................................................. |
6 |
Critical and Warranty Parts Designation .................................................................................... |
6 |
Parts Tolerance Codes ................................................................................................................. |
6 |
Quick Reference For Common Replacement Parts .................................................................. |
7 |
ServicePart List ............................................................................................................................ |
8 |
Tubes .................................................................................................................................... |
8 |
Integrated Circuits .................................................................................................................. |
8 |
Transistors ............................................................................................................................. |
9 |
Diodes ................................................................................................................................... |
9 |
Coils .................................................................................................................................... |
10 |
Transformers ........................................................................................................................ |
12 |
Variable Resistors ................................................................................................................ |
12 |
Resistors ............................................................................................................................. |
12 |
Capacitors and Trimmers ..................................................................................................... |
14 |
Switches .............................................................................................................................. |
16 |
Printed Circuit Boards .......................................................................................................... |
17 |
Cosmetic Parts .................................................................................................................... |
17 |
Accessories ......................................................................................................................... |
17 |
Screen Assembly Parts .............................................................................................................. |
18 |
Page 3
MODELS: WS-55908 / WS-65908
Page 4
MODELS: WS-55908 / WS-65908
CHIP PARTS REPLACEMENT
Some resistors, shorting jumpers (0 Ohm resistors), ceramic capacitors, transistors and diodes are chip parts. The following precautions should be taken when replacing these parts.
Cautions:
1.Use a fine tipped, well insulated soldering iron (approximately 30 watts), and tweezers.
2.Melt the solder and remove the chip parts carefully so as not to tear the copper foil from the printed circuit board.
3.Discard removed chips; do not reuse them.
4.Do not apply heat for more than 3 (three) seconds to new chip parts.
5.Avoid using a rubbing stroke when soldering.
6.Take care not to scratch, or damage the chip parts when soldering.
7.Supplementary cementing is not required.
Chip Parts Removal (Resistors, Capacitors, etc.)
1.Grasp the part with tweezers. Melt the solder at both sides alternately, and remove one side of the part with a twisting motion.
2.Melt the solder at the other side and remove the part.
Chip Parts Removal (Transistors)
1.Melt the solder of one lead and lift the side of that lead upward.
2.Simultaneously melt the solder of the other two leads and lift the part from the PCB.
Replacement
1.Presolder the contact points on the circuit pattern.
2.Press the part downward with tweezers and apply the soldering iron as shown.
PAGE 5
MODELS: WS-55908 / WS-65908
REPLACEMENT PARTS
Parts Ordering
To expedite delivery of replacement parts orders, specify the following:
1.Model Number/Serial Number
2.Part Number and description
3.Quantity
Note: Unless complete information is supplied, delay in processing of orders will result.
Critical and Warranty Parts Designation
Critical Electrical Components are indicated by Bold Type in the Parts List, and in the schematic diagrams by shading. 
Warranty Return Parts are indicated in the Parts List with an (*).
Parts Tolerance Codes
Refer to the following chart for tolerance characteristics of electrical components.
MARK |
B |
C |
D |
F |
G |
J |
K |
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Tolerance % |
± 0.1 |
± 0.25 |
± 0.5 |
± 1 |
± 2 |
± 5 |
± 10 |
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MARK |
M |
N |
V |
X |
Z |
P |
Q |
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Tolerance % |
± 20 |
± 30 |
± 10 |
+ 40 |
+ 80 |
+ 100 |
+ 30 |
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-20 |
-20 |
- 0 |
-10 |
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MARK |
M |
N |
V |
X |
Z |
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Tolerance (pF) |
± 0.1 |
± 0.25 |
± 0.5 |
± 1 |
± 2 |
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PAGE 6
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