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Popular Sharp 20LK61M Manual Pages
Service Manual - Page 1
... USER'S CONTROL ...4
» INSTALLATION AND SERVICE INSTRUCTIONS 5
» CHASSIS LAYOUT ...10
» BLOCK DIAGRAM ...12
» SCHEMATIC DIAGRAMS ...14
» PRINTED WIRING BOARD ASSEMBLIES 21
» REPLACEMENT PARTS LIST ...24
» PACKING OF THE SET ...31
ELECTRICAL SPECIFICATIONS
POWER INPUT 110-220 V AC 50/60 Hz POWER RATING
20LK31M 88 W 20LK61M 98 W PICTURE SIZE 1,194cm2...
Service Manual - Page 2
... TV receivers is essential that specified or make unrecommended circuit modifications to keep the high voltage below the maximum level specified.
2. It is the picture tube. X-RADIATION AND HIGH VOLTAGE LIMITS
1. 20LK31M 20LK61M
IMPORTANT SERVICE SAFETY PRECAUTION
Ë Service work should be performed only by qualified service technicians who are aware of the procedures and instructions...
Service Manual - Page 3
... this service manual, may
components rated for this manual; AC VOLTMETER
1.5k ohm 10W
0.15µF TEST PROBE
TO EXPOSED METAL PARTS
CONNECT TO KNOWN EARTH GROUND...-capacity networks, mechanical insulators and etc.
3. Replacement parts which do not have special safety-related characteristics. 20LK31M 20LK61M
IMPORTANT SERVICE SAFETY PRECAUTION
(Continued)
BEFORE RETURNING THE RECEIVER
...
Service Manual - Page 4
... Transmitter Window
INPUT Press → Switch to previous channel.
MUTE Press Mutes sound. Press again → Switch to TV mode. 20LK31M 20LK61M
LOCATION OF USER'S CONTROL
Front Panel
20LK31M
LK
20LK61M
LK
VIDEO/AUDIOIN TERMINALS
VIDEO/AUDIOIN TERMINALS
POWER
Press → On. REMOTE KEYPAD Accesses any channel from keypad. VOLUME UP/DOWN (+) Increases...
Service Manual - Page 5
...0kV (at least 15 minutes. 20LK31M 20LK61M
Note:
INSTALLATION AND SERVICE INSTRUCTIONS
(1) When performing any adjustments to resistor controls and transformers use non-metallic screwdrivers or TV alignment tools.
(2) Before performing adjustments, the TV set is protected by using a variac ....
Apply 120V AC using an
external DC supply, TV must be repaired before the set must be on ).
4.
Service Manual - Page 6
...service mode and exit service mode. Now, the TV set is required. Service mode.
Window 2: DEF
D01
D02
D03
D04
D05
D06
RETURN
DEF
SIGNAL
Window 3: SIGNAL
S01
S02
S12 S13 RETURN
RETURN
Window 1: ADJUSTMENT Categories
SERVICE..., plug the AC cord into the service mode, check that customer adjustments are still a few analog adjustments in this model, the bus data is converted to ...
Service Manual - Page 7
..."03":Activate color killer circuit Must be "0F"
SIGNAL
Table -
PART REPLACED IC2001 IC201
IC2101
ADJUSTMENT NECESSARY UNNECESSARY
X X
X
NOTES
Data is needed...SERVICE POSITION
F14 F15 F16 F17 F18 F19 F20 F21 F22 F23 F24 F25 F26
ADJUST ITEM
OSD CONT SHARPNESS...TV set in the service mode for more than 2 seconds will automatically write the above initial values into IC2101. 20LK31M 20LK61M...
Service Manual - Page 8
... or monoscope pattern.
20LK31M 20LK61M
Ë SERVICE ADJUSTMENT
RF AGC Adjustment
1. Enter the service mode signal category and select
the service adjustment "S01". 3. Note: You have to exit the service mode first to
select another channel to the point where raster is barely seen. 7. Then select the service adjustment "S12" and set the data value to "00...
Service Manual - Page 9
... Correction and set the data to pin (39) of IC3001. 3. Enter the service mode and select the service adjustment "M04". 4. Enter the service mode and select the service adjustment "M05". 7. Enter the service mode DEF ... 490
±10mVrms.
MTS VCO Adjustment
1.
Set in between
positive(+) side of C3005 and ground. 4. A
B
Figure C.
20LK31M 20LK61M
Ë MTS ADJUSTMENT
MTS Level Adjustment
1. ...
Service Manual - Page 14
... a standard one, printed circuits may be subject to chassis ground.)
å AND SHADED (
) COMPONENTS
= SAFETY RELATED PARTS.
' MARK= X-RAY RELATED PARTS. The unit of the picture tube depend on a standard gated color bar
signal, the tint setting adjusted for normal picture unless otherwise indicated. 2. VOLTAGE MEASUREMENT CONDITIONS: 1. All DC voltages are µ F, unless...
Service Manual - Page 22
... X BR24C02
AH
or
VHiM24C02B/-1
IC3001 VHiCXA2074Q-1 J CXA2074Q (20LK61M) AY
IC3371 VHiAN7511//-1
J AN7511 (20LK61M)
AK
TRANSISTORS
You can substitute "VS2PD601AR/-1" for "VS2SC3928R/-1". "HOW TO ORDER REPLACEMENT PARTS"
To have the same safety characteristic as the factory recommended replacement parts shown in this service manual may create shock, fire or other hazards. Main Unit...
Service Manual - Page 26
... Holder
AC
P302 QPLGN0461CEZZ J Plug, 4-pin (S)(20LK31M) AB
P303 QPLGN0461CEZZ J Plug, 4-pin (S)(20LK61M) AB
P401 QPLGN0561CEZZ J Plug, 5-pin (GBN)
AB
Ref. AA
(20LK61M)
R3004 VRS-CY1JF104J J 100k 1/16W M-Ox.
Part No.
5
Description
Code
PWB-A: DUNTKA221WEV1 (20LK31M) PWB-A: DUNTKA221WEV3 (20LK61M)
MAIN UNIT (Continued)
R2404 VRS-CY1JF101J J 100 1/16W M-Ox. AA
R2501 VRS-CY1JF123J...
Service Manual - Page 28
... - SPAKX0002GJZZ -
Part No.
5
Description
Code
PACKING PARTS
(NOT REPLACEMENT ITEM)
SPAKC0134GJZZ - Packing Case (20LK61M) -
CABINET PARTS
1
CCABA0110WEH0 X Front Cabinet Ass'y
BB
(20LK31M)
1
CCABA0111WEH0 X Front Cabinet Ass'y
BA
(20LK61M)
1-1
Not Available - Front Cabinet
-
1-2 GCOVA0002GJSA X Cover for R/C
AL
1-3 HBDGB0019PESB R Badge, "SHARP"
AD
1-4 JBTN...
Service Manual - Page 29
20LK31M 20LK61M
Ref. No. Part No.
5
Description
Code
5 Polyethylene Bag
5 Polyethylene Foam Wrap
Operation Manual Infrared R/C Unit Rod Antenna Antenna Adapter 5 Batteries
5 Buffer Material
FRONT
5 Packing Case
5 MARK : Not Replacement Items.
REAR
Use tapes to fix the packing case.
31 No. Part No.
5
PACKING OF THE SET Description
Code
Ref.
Service Manual - Page 30
.... Part No.
5
Description
Code
Ref.
20LK31M 20LK61M
Ref.
D SEMEX P SEMEX TQ0967-S Aug. 2000 Printed in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of this publication may be reproduced, stored in a retrieval system, or transmitted in Japan
MI. Part No.
5
Description
Code
COPYRIGHT © 2000 BY SHARP...
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