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21F1
Qls 21F1 Manuals
Manuals and User Guides for Qls 21F1. We have
1
Qls 21F1 manual available for free PDF download: Service Manual
Qls 21F1 Service Manual (78 pages)
CHASSIS: NX56E-LA
Brand:
Qls
| Category:
TV
| Size: 4.88 MB
Table of Contents
Contents
1
Important Safety Instructions
3
If the Set Does Not Operate Properly
5
Product Functional Specification
6
Disclosure
7
Revision History
8
Chassis Alignment Procedure
13
Revision History
15
The Way to Enter P-Mode
16
Exit the P-Mode
16
Keys’ Function on RC at the P-Mode
16
The Adjustment Page List on P-Mode
16
Flowchart of Alignment Procedure
17
Adjustment Description
18
B+ Voltages
18
The B+ Value for Vary Tubes
18
RF AGC Alignment
19
Screen and Focus Adjustment
19
White Balance Adjustment
20
The White Balance Adjustment Setup
20
Picture Geometry Adjustment
21
Vertical Geometry Adjustment
21
Horizontal Geometry Adjustment
21
Producing Parameter Setup and Option
22
Description
23
Producing Parameter Setup
24
RF Section
28
Tuner Section
28
Small Signal Processing Section
29
Horizontal Scanning Section
30
Block Diagram of IC201
30
Vertical Scanning Section
31
CRT Scanning Section
31
Audio Power Amplifying Section
32
Power Supply Section
32
PCB Material
34
Product Data Sheet
40
General Description
40
Features
41
Analog Video Processing
41
Overview of Available Features
41
Features of AV-110/90 Concept Not Available in the Mono-110
42
Features of Av/Mono-110 Concept Not Available in the AV-90
42
Differences in Feature for MONO-90 Compared with
42
AV-110/90 and Mono-110
42
Micro-Controller
43
Data Capture
43
Display
44
Features of the OSD-Only Devices
44
Features of the Teletext and Closed Caption Devices
44
Quick Reference Data
45
Block Diagram of the “AV-110/90” and “MONO-110” TV Processor
46
Block Diagram of the “MONO-90” TV Processor
47
Pinning Information
48
Vertical Deflection Booster
50
Main Features
50
Absolute Maximum Ratings
51
Thermal Data
51
Electrical Characteristics
52
Measurement of I1, I2 and I6
53
Measurement of V5H
53
Measurement of V3L and V5L
53
Application Hints
54
DC-Coupled Application
54
Ripple Rejection
55
Centering
55
Peak Current
55
AC-Coupled Applications
56
Application with Differential-Output Drivers
57
Using a Differential-Output Driver
57
7W+7W Dual Bridge Amplifier
58
Block and Application Diagram
58
Pin Connection
59
Application Suggestion
60
Stand-By and Mute Functions
60
Microprocessor Application
60
Colour Television
61
Fuse Blown
61
No Raster Abnormal +B
61
No Raster, +B OK
62
No Sound
62
No Vertical Scanning
63
No Picture
63
Exploded View and Parts List
77
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