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Colour television
Chassis
SK1.0A
CA
G_16530_035.eps 070806
Contents
Page
1. Technical Specifications, Connections, and Chassis Overview 2 2. Safety Instructions, Warnings, and Notes 4 3. Directions for Use 6 4. Mechanical Instructions 7 5. Service Modes, Error Codes, and Fault Finding 8 6. Block Diagrams, Test Point Overviews, and Waveforms Block Diagram Chassis 9 Schematic Overview 10 7. Circuit Diagrams and PWB Layouts Diagram Mono Carrier: Power Supply (A1) 11 Mono Carrier: Line Deflection (A2) 12 Mono Carrier: Frame Deflection (A3) 13 Mono Carrier: Tuner IF (A4) 14 Mono Carrier: AV I/O (A5) 15 Mono Carrier: Audio/Video Source Switch (A6) 16 Mono Carrier: Video IF Sound IF (A7) 17 Mono Carrier: CPU Control (A8) 18 Mono Carrier: Audio Amplifier (A9) 19 CRT Panel (B) 22 Front Control (D) 24 Front AV (E) 26 8. Alignments 27 9. Circuit Descriptions, Abbreviation List, and IC Data Sheets 31 10. Spare Parts List 39 11. Revision List 41
PWB 20-21 20-21 20-21 20-21 20-21 20-21 20-21 20-21 20-21 23 25 26
© Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by WS 0765 TV Service
Printed in the Netherlands
Subject to modification
EN 3122 785 16531
EN 2
1.
SK1.0A CA
Technical Specifications, Connections, and Chassis Overview
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter: Technical Specifications Connection Overview Chassis Overview Note: Data below can deviate slightly from the actual situation, due to the different set executions.
G_16530_004.eps 310706
AUDIO VIDEO L R
1.1
1.1.1
Technical Specifications
Vision Display type Screen size Tuning system TV Colour systems Video playback Presets/channels Tuner bands : : : : : : : : : CRT 21" (55 cm), 4:3 VST PAL D/K, I NTSC M/N 3.58, 4.43 PAL 50 256 channels VHF UHF
Figure 1-2 Side I/O connections
1.1.2
Sound Sound systems : : : : FM-mono AV-mono AV-Eco Stereo 2x3
Maximum power (WRMS) 1.1.3 Miscellaneous Power supply: - Mains voltage (VAC) - Mains frequency (Hz) Ambient conditions: - Temperature range (°C) - Maximum humidity Power consumption - Normal operation (W) - Stand-by (W)
G_16530_037.eps 310706
Figure 1-3 Front Control (IR / LED) Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm 1.2.2 : -5 to +45 : 90% R.H. Rear Connections
75 Ohm
: 160 - 260 : 50 / 60
jq jq jq
: 70 : <9
1.2
Connection Overview
G_16530_038.eps 310706
Note: The following connector colour abbreviations are used (acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy= Grey, Rd= Red, Wh= White, and Ye= Yellow. 1.2.1 Front Control and Side Connections
Figure 1-4 Rear connections Aerial - In - - IEC-type (EU)
Coax, 75 ohm
D
G_16530_036.eps 310706
Cinch: Video CVBS - Out, Audio - Out Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS /10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Cinch: Video CVBS - In, Audio - In Ye - Video CVBS 1 VPP / 75 ohm Wh - Audio L 0.5 VRMS / 10 kohm Rd - Audio R 0.5 VRMS / 10 kohm Cinch: Video YPbPr - In Gn - Video Y 1 VPP / 75 ohm Bu - Video Pb 0.7 VPP / 75 ohm Rd - Video Pr 0.7 VPP / 75 ohm
kq kq kq
Figure 1-1 Front Control
jq jq jq
jq jq jq
Technical Specifications, Connections, and Chassis Overview 1.3 Chassis Overview
SK1.0A CA
1.
EN 3
CRT PANEL
B A1 A2 A3 A4 A5 A6 A7 A8 A9
D E
FRONT CONTROL PANEL
MAIN
SIDE AV PANEL
POWER SUPPLY LINE DEFLECTION FRAME DEFLECTION TUNER IF AV I/O AUDIO / VIDEO VIDEO IF SOUND IF CPU CONTROL AUDIO AMPLIFIER
CHASSIS
PANEL
G_16530_039.eps 070806
Figure 1-5 PWB location
EN 4
2.
SK1.0A CA
Safety Instructions, Warnings, and Notes
2. Safety Instructions, Warnings, and Notes
Index of this chapter: Safety Instructions Maintenance Instructions Warnings Notes 1. Perform the "general repair instruction" noted above. 2. Clean the power supply and deflection circuitry on the chassis. 3. Clean the picture tube panel and the neck of the picture tube.
2.1
Safety Instructions
Safety regulations require the following during a repair: · Connect the set to the Mains/AC Power via an isolation transformer (> 800 VA). · Replace safety components, indicated by the symbol h, only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard. · Wear safety goggles when you replace the CRT. Safety regulations require that after a repair, the set must be returned in its original condition. Pay in particular attention to the following points: · General repair instruction: as a strict precaution, we advise you to re-solder the solder connections through which the horizontal deflection current flows. In particular this is valid for the: 1. Pins of the line output transformer (LOT). 2. Fly-back capacitor(s). 3. S-correction capacitor(s). 4. Line output transistor. 5. Pins of the connector with wires to the deflection coil. 6. Other components through which the deflection current flows. Note: This re-soldering is advised to prevent bad connections due to metal fatigue in solder connections, and is therefore only necessary for television sets more than two years old. · Route the wire trees and EHT cable correctly and secure them with the mounted cable clamps. · Check the insulation of the Mains/AC Power lead for external damage. · Check the strain relief of the Mains/AC Power cord for proper function, to prevent the cord from touching the CRT, hot components, or heat sinks. · Check the electrical DC resistance between the Mains/AC Power plug and the secondary side (only for sets that have a Mains/AC Power isolated power supply): 1. Unplug the Mains/AC Power cord and connect a wire between the two pins of the Mains/AC Power plug. 2. Set the Mains/AC Power switch to the "on" position (keep the Mains/AC Power cord unplugged!). 3. Measure the resistance value between the pins of the Mains/AC Power plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 Mohm and 12 Mohm. 4. Switch "off" the set, and remove the wire between the two pins of the Mains/AC Power plug. · Check the cabinet for defects, to prevent touching of any inner parts by the customer.
2.3
Warnings
· In order to prevent damage to ICs and transistors, avoid all high voltage flashovers. In order to prevent damage to the picture tube, use the method shown in figure "Discharge picture tube", to discharge the picture tube. Use a high voltage probe and a multi-meter (position VDC). Discharge until the meter reading is 0 V (after approx. 30 s).
V
E_06532_007.eps 250304
Figure 2-1 Discharge picture tube · All ICs and many other semiconductors are susceptible to electrostatic discharges (ESD w). Careless handling during repair can reduce life drastically. Make sure that, during repair, you are connected with the same potential as the mass of the set by a wristband with resistance. Keep components and tools also at this same potential. Available ESD protection equipment: Complete kit ESD3 (small tablemat, wristband, connection box, extension cable and earth cable) 4822 310 10671. Wristband tester 4822 344 13999. Be careful during measurements in the high voltage section. Never replace modules or other components while the unit is switched "on". When you align the set, use plastic rather than metal tools. This will prevent any short circuits and prevents circuits from becoming unstable.
· · ·
2.4
2.4.1
Notes
General · Measure the voltages and waveforms with regard to the chassis (= tuner) ground (H), or hot ground (I), depending on the tested area of circuitry. The voltages and waveforms shown in the diagrams are indicative. Measure them in the Service Default Mode (see chapter 5) with a colour bar signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated otherwise) and picture carrier at 475.25 MHz for PAL, or 61.25 MHz for NTSC (channel 3). Where necessary, measure the waveforms and voltages with (D) and without (E) aerial signal. Measure the voltages in the power supply section both in normal operation (G) and in stand-by (F). These values are indicated by means of the appropriate symbols. The semiconductors indicated in the circuit diagram and in the parts lists, are interchangeable per position with the semiconductors in the unit, irrespective of the type indication on these semiconductors. Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic" and the "double-D symbol", are trademarks of Dolby Laboratories.
2.2
Maintenance Instructions
We recommend a maintenance inspection carried out by qualified service personnel. The interval depends on the usage conditions: · When a customer uses the set under normal circumstances, for example in a living room, the recommended interval is three to five years. · When a customer uses the set in an environment with higher dust, grease, or moisture levels, for example in a kitchen, the recommended interval is one year. · The maintenance inspection includes the following actions:
·
·
·
Safety Instructions, Warnings, and Notes
2.4.2 Schematic Notes · All resistor values are in ohms, and the value multiplier is often used to indicate the decimal point location (e.g. 2K2 indicates 2.2 kohm). Resistor values with no multiplier may be indicated with either an "E" or an "R" (e.g. 220E or 220R indicates 220 ohm). All capacitor values are given in micro-farads (= x10-6), nano-farads (n= x10-9), or pico-farads (p= x10-12). Capacitor values may also use the value multiplier as the decimal point indication (e.g. 2p2 indicates 2.2 pF). An "asterisk" (*) indicates component usage varies. Refer to the diversity tables for the correct values. The correct component values are listed in the Spare Parts List. Therefore, always check this list when there is any doubt. ·
SK1.0A CA
2.
EN 5
·
·
· · · ·
·
2.4.3
Lead-free Solder Philips CE is producing lead-free sets (PBF) from 1.1.2005 onwards. Identification: The bottom line of a type plate gives a 14-digit serial number. Digits 5 and 6 refer to the production year, digits 7 and 8 refer to production week (in example below it is 1991 week 18).
MODEL : 32PF9968/10
MADE IN BELGIUM 220-240V ~ 50/60Hz 128W VHF+S+H+UHF
clean the solder-joint from old tin and re-solder with new tin. Use only original spare-parts listed in the Service-Manuals. Not listed standard material (commodities) has to be purchased at external companies. Special information for lead-free BGA ICs: these ICs will be delivered in so-called "dry-packaging" to protect the IC against moisture. This packaging may only be opened shortly before it is used (soldered). Otherwise the body of the IC gets "wet" inside and during the heating time the structure of the IC will be destroyed due to high (steam-) pressure inside the body. If the packaging was opened before usage, the IC has to be heated up for some hours (around 90°C) for drying (think of ESD-protection!). Do not re-use BGAs at all! For sets produced before 1.1.2005, containing leaded soldering tin and components, all needed spare parts will be available till the end of the service period. For the repair of such sets nothing changes.
In case of doubt whether the board is lead-free or not (or with mixed technologies), you can use the following method: · Always use the highest temperature to solder, when using SAC305 (see also instructions below). · De-solder thoroughly (clean solder joints to avoid mix of two alloys). Caution: For BGA-ICs, you must use the correct temperatureprofile, which is coupled to the 12NC. For an overview of these profiles, visit the website www.atyourservice.ce.philips.com (needs subscription, but is not available for all regions) You will find this and more technical information within the "Magazine", chapter "Repair downloads". For additional questions please contact your local repair help desk. 2.4.4 Alternative BOM identification In September 2003, Philips CE introduced a change in the way the serial number (or production number, see Figure 2-2) is composed. From this date on, the third digit in the serial number (example: AG2B0335000001) indicates the number of the alternative BOM (Bill of Materials used for producing the specific model of TV set). It is possible that the same TV model on the market is produced with e.g. two different types of displays, coming from two different O.E.M.s. By looking at the third digit of the serial number, the service technician can see if there is more than one type of B.O.M. used in the production of the TV set he is working with. He can then consult the At Your Service Web site, where he can type in the Commercial Type Version Number of the TV set (e.g. 28PW9515/12), after which a screen will appear that gives information about the number of alternative B.O.M.s used. If the third digit of the serial number contains the number 1 (example: AG1B033500001), then there is only one B.O.M. version of the TV set on the market. If the third digit is a 2 (example: AG2B0335000001), then there are two different B.O.M.s. Information about this is important for ordering the correct spare parts! For the third digit, the numbers 1...9 and the characters A...Z can be used, so in total: 9 plus 26 = 35 different B.O.M.s can be indicated by the third digit of the serial number. 2.4.5 Practical Service Precautions · It makes sense to avoid exposure to electrical shock. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard. Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.
PROD.NO: AG 1A0617 000001
S
BJ3.0E LA
E_06532_024.eps 130606
Figure 2-2 Serial number example Regardless of the special lead-free logo (which is not always indicated), one must treat all sets from this date onwards according to the rules as described below.
P
b
Figure 2-3 Lead-free logo Due to lead-free technology some rules have to be respected by the workshop during a repair: · Use only lead-free soldering tin Philips SAC305 with order code 0622 149 00106. If lead-free solder paste is required, please contact the manufacturer of your soldering equipment. In general, use of solder paste within workshops should be avoided because paste is not easy to store and to handle. · Use only adequate solder tools applicable for lead-free soldering tin. The solder tool must be able: To reach a solder-tip temperature of at least 400°C. To stabilise the adjusted temperature at the solder-tip. To exchange solder-tips for different applications. · Adjust your solder tool so that a temperature of around 360°C - 380°C is reached and stabilised at the solder joint. Heating time of the solder-joint should not exceed ~ 4 sec. Avoid temperatures above 400°C, otherwise wear-out of tips will increase drastically and flux-fluid will be destroyed. To avoid wear-out of tips, switch "off" unused equipment or reduce heat. · Mix of lead-free soldering tin/parts with leaded soldering tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
·
EN 6
3.
SK1.0A CA
Directions for Use
3. Directions for Use
You can download this information from the following websites: http://www.philips.com/support http://www.p4c.philips.com
Mechanical Instructions
SK1.0A CA
4.
EN 7
4. Mechanical Instructions
Index of this chapter: Set Disassembly Service Positions Assy / Board Removal Set Re-assembly Note: Figures below can deviate slightly from the actual situation, due to the different set executions.
4.3
Assy / Board Removal
Sometimes, it can be necessary to swap a complete assy or Printed Wiring Board (PWB). How that can be done is explained below for the Side I/O Panel.
4.3.1
Side I/O Panel Removal
4.1
Set Disassembly
Follow the disassemble instructions in described order.
4.1.1
Rear Cover Removal Warning: disconnect the mains power cord before you remove the rear cover. 1. Remove all the fixation screws of the rear cover. 2. Now, pull the rear cover backwards and remove it.
G_16530_002.eps 030806
Figure 4-3 Side-I/O panel removal
G_16530_005.eps 310706
Figure 4-1 Rear Cover removal
1. Remove the complete Side I/O Assembly as follows: first, remove the three fixation screws. 2. Then, release the three fixation clamps, and lift the board out of its three brackets.
4.2
Service Positions
This chassis has a predefined service position, for better accessibility. It is explained below in more detail.
4.4
Set Re-assembly
To re-assemble the whole set, do all processes in reverse order. Be sure that, before the rear cover is mounted: · The mains cord is postioned correctly in its guiding brackets (make sure that the strain relief is replaced in its correct position and that it will function correctly!). · All wires/cables are returned in their original positions.
4.2.1
Service Position Main Panel Removing cables and repostioning the panel For better accessibility of the Main Panel, do the following (see Figure "Service position"): 1. Disconnect the strain relief of the AC power cord. 2. Remove the Main Panel. At the same time pull the panel away from the CRT. 3. Disconnect the degaussing coil by removing the cable from the connector. 4. Move the panel somewhat to the left and flip it 90 degrees with its components towards the CRT.
G_16530_006.eps 070806
Figure 4-2 Service position
EN 8
5.
SK1.0A CA
Service Modes, Error Codes, and Fault Finding
5. Service Modes, Error Codes, and Fault Finding
Index of this chapter: Test Points Service Modes Error Codes Fault Finding If the voltage is low, change IC301. If the problem still exists, change the surrounding components in the circuit (eg. C320 etc.).
5.4.5
Poor picture and sound quality. · · Check if the signal line contact is good. Next, use a conductor to touch the base of Q101, if no effect is observed the problem is suspected to be in the IF amplification circuit. Use a 0.01 uF capacitance to short the input and output terminals of SAW101 to isolate if the SAW filter is faulty. If the picture and sound condition does not improve, check the AGC circuitry.
5.1
Test Points
See chapter 6 "Block Diagrams, Testpoint Overviews, and Waveforms". Perform measurements under the following conditions: · Service Default Mode. · Video: colour bar signal. · Audio: 3 kHz left, 1 kHz right.
·
5.4.6
The colour disappears after the TV is turned ON for a while. · · · Check if the colour system is selected correctly. If you suspect the 4.43 MHz crystal, replace it. If there is no effect, then replace suspected components in the decoding and colour circuitry (e.g C130, C205).
5.2
Service Modes
This chassis does not contain a specific Service Mode. Service and Alignment of the TV set can be done via the Factory Mode by the service technician, see further down in this manual. 5.4.7
The TV set is unable to receive any channel program. This fault is primarily caused by the tuning voltage circuitry. · Press the auto search button, while measuring the tuning voltage of the tuner. The normal value should be 0 - 33 V. · Check Q002 and D001. In normal operation the collector voltage of Q002 should reach 33 V.
5.3
Error Codes
Not applicable.
5.4
5.4.1
Fault Finding
The TV set turns ON and OFF randomly when you attempt to turn ON the TV set. · The chassis power supply of the horizontal deflection part of the circuit has loose or bad (corroded) connections, resulting in irregular power supply. Check if the Q607 switching transistor is working properly, measure voltage point in the power supply. If the supply voltage is not avialable or not normal, change Q607. 5.4.8
No colour in AV state · The colour decoder part is faulty, replace IC101 and the surrounding components of the IC. During auto search , the tuning voltage should increase or decrease in small steps in order to increase or decrease the reception frequency. If the voltage increases/decreases but the reception frequency does not change, the tuning varicap inside the tuner unit may be faulty. If the problem persists, replace video switch 4052. Attention: this is a MOS component and is therefore very sensitive to ESD! If the problem still persists, replace the decoder circuit.
·
· 5.4.2 The TV set is turned ON but no picture and sound is observed. · Measure the collector voltage of Q302 for 110 V to eliminate the possibility that the horizontal deflection circuit is causing the problem. During normal operation, the collector voltage should be in the range of 110 V. If this voltage is not present, replace transistor Q302. Next, proceed to check the collector voltage of Q301. In normal operation the collector output is an alternating voltage. If Q301 is damaged, check also C313 and C314 for damage and replace component when needed. If non of above is valid, proceed to measure the horizontal pulse output voltage at Pin33 of IC101. In normal operation, the voltage is in the range of 2.8 VAC. If there is no switching voltage, change IC101.
· 5.4.9
Soft volume can still be heard, even when volume level is reduced to "0". · · Check the resistor divider circuit (R102, R028 and C015) at pin 8 of IC101. Replace component when needed. Proceed to check the audio control module, check surrounding components of IC401. Example C407, residual effect will also give such symptom; check for dry solder or leaking.
·
·
5.4.3
The TV displays a blue screen when it is turned ON. The TV set is not equipped with a noise-reduction circuit. Therefore, when a synchronization signal is not detected, the CPU decodes it as "no signal detected". Check the tuner and the IF amplifier circuit, replace Q101 if needed.
5.4.4
In the picture appears a horizontal bright line. · · Check the vertical deflection loop for poor contact. Check the vertical IC power supply for +12.5 V and -12.5 V. If no voltage is present, check R341 for open circuit.
Block Diagrams, Test Point Overviews, and Waveforms
SK1.0A CA
6.
9
6. Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Chassis
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
BA ND CO NT RO L
A8
D
A8 A8
CPU CONTROL
VC C
VT A4 SYST EM
A4
R007 IC102 6 1 2 3 7 CRY STAL R014 R015 SCL CE0 CE1 CE2 WC 24C08 SDA
R008
KE Y
5
IR IN
M001
D
RESE TV
PE
D
FRONT CONTROL M001
IR OUT
+5
A6
AUDIO /VIDEO
SOURCE SW ITCH 1
2
IC103
Vdd
16 15
A7
HV SH -Y AV 1-VI N CV BS -Y AV 2-VI N Y UV- YI N AV 1 IC 101 C ONTRO L
VIDEO IF SOUND IF
A4 A9
R040 0 3 LED001 4 5 6 7 8 1 2 3 3 12 11 A0 A1 10 9 0 1 2 14 13
A5 A5 A7
SOUND TR AP
TUNE R AGC AUDIO.E XT IFVO/SV O 38 27 35 44
AG C CIRCU IT
AUDIO.OUT
58
59
23
1011 4 5 67
A9
8 1 62 63
A9 VOLUME STANDY CON A1 A6
IC402-13
AUDIO AMPLIFIER
IC 401
INPUT1 3 OUT1+ 13 DC VO LUME 1 CONTROL1 OUT1- 11
TE MPERATURE PROTECTO N
LO CA L KEYBOARD
E
A5
ENHANC ED 80C51 CPU TO DEC ODER
Vss TC4052
2T O4 Decode r
Vee
I2C---B US TR ANS CE IVER VS T PWM--DAC I/OP OR T
CON AV SWITCH A6
AV 2
A8
A5
AV I/O
YUV IN AV1 IN
Y V U V
Q201 Q202 Q203 Q204
R L
23 IF IN 24
IC 101
A7 YUV
1
TO IC 402 A6 SWITCH
IC402
Vdd
VI SION IF AL IGNMENT --FRE E PL CC DEMO D AGC/AFC VI DEO AMP
DEEMP HASIS AUDIO SW ITCH
TO H/V SY NC
IC402-3 A6
INPUT2 DC VO LUME CONTROL2
5
OUT2- 10
A8
RO M/RA M
CLOSED CAPTION ACQUISITION
16 15 C? 0.01uF
OSD DISPL AY
IC101 VO L
7
OUT2+ 8
Q205 Q206 AV2 IN
V R L
A5
9 A9
AV 2-LI N IC 401-Ai n2
2 0 3 4 1 2 3 3 5 6 0 1 2
L
14 13 12 11 A0 A1 10 9
AV 1-RI N IC 401-Ai n1 AV 2-RI N
A5 A9
CV BS SY NC
H V
CORBR
GB
L
R
SPEA KE R
Y/C IN
A6
C Y
TO IC 103 SWIT CH
A5
AV 1-LI N
CV BS /Y
A7 A6
42 43
Q406
A9
A5
V R L
IC 401 Q407
AV OUT
A7 CH RO MA
8
2T O4 Decode r
C
A7
E Vee Vss TC4052
IFVO
Q207
Q407 AOU T- L AM PLIFIER
7
IC 101-AU DOUT
C
VI DEO SW ITCH VI DEO IDEN T VI DEO FI LT ER S
AGC CIRCU IT NARRO W BA ND PL L DEMODU LATO R
C
Q406 AM PLIFIER
AOU T- R
A5
B
51 PA L/NTSC DECODER BA SE BA ND DELA Y LI NE LUMA DELA Y PEAKING BLACK ST RETCH CONTR/BRIGHT OSD INSE RT CCC WHITE-P.ADJ 52 53 49
BL KI N RO
1 HEAT ER
CRT
V 501 CRT
H302
GO B BO BC LI N
2 GND 3
5 180V C506
R529 R515 R525 R506
A4
TUNER IF
R106 R105 L100
12V
EHT
R103 R631 Q101 ZD102
RG
B
Q504 Q505Q506 R521 Q501Q502Q503 R510 R527 R517
RF TUNE R AGC VT HS B2 B1 VC CI F
C110
R102 C113
SA W101
IF1 IF2
H/V SY NC H.OSC .PLL
H.DR IV E 2nd LOOP H.SHIFT
V. DR IV ER GEOMET RY
RG B/YP rPb INSERT RG B/YU V MATR IX SATURATION YUV/RGB MATR IX V
Y U
Q507Q508Q509 510 R508
R115
5 GND
C504
ZD501
Q002
PWM AMPLIFIE R ZD606
R631
H201
RF AGC B+
A7
4 BO 3 RO 2 GO 1 +8V
Q102 Q103
33.5MHz FILTER SWIT CH SY STEM
33
A8
21
22
36
46 47
48
H.OUT
BAND CONTRO L
R020 VT
EHTO
A 2
SCREEN
FOCUS
A8
R/Pr G/YB /PbB L
A 6
B
V. DR IV E
B
1
2
4
3
A1
L 601
POWER SUPPLY
T3.15A 250V~ F601 T601 T602
R602
1
D501 D501
C604 C607 R616 3
7
T603
4
R624
D608
L605 110V
A3
A2
FRAME DEFLECTION
TE MP ER AT UR E PROT ECTO N
LINE DEFLECTION
PORT CURCI RT
C317
EHTO
C603 R601 C602 C601 2 C605
T302
R315 4 1 R317
FB T
!
EHT
C614 C606 1 C615 8
R619 C616
13V D308 +12 .5V -12.5V
D306
4
TO VE RT IC AL
C312
!
3
4
2
1
D605 C611 R605 R607
CN 302
DIFFE RA NT IA L INPU T STAG E VERT ICAL OUT PUT FL YB AC K GENERA TO R RE FERA NCE CIRCU IT
HEATER
C316
D307 D302
9 D607 R615 12 C617 R618 D606 C610 D609 L606 12V C618
R339 2 R314
R604
R601
R613 Q601 R609
7
IN PI
Q401 CONTRO L FBT-7 CONTR Port IC4014
6
NN
5
VO UT
4
GN DV
3
P2
2
VF BV
1
P1
180V
C321
7
FOCUS
3
PT C
C612 R612 Q602 Q604
A2
D313
B+
R314 B R314A
3
t
8
SC REEN
12V
1
2
1
Port
2
R604 R603 ZD602 ZD601 R606 R600 C608 R611 Q603 C609
A2
5V
Q605 ZD605
POWER DOWN CIRCU IT C636 Q606Q607 C613 R614 R617 STANDB Y CIRCU IT C637
FR OM DE FLEC TO N CONT ROL
R331
R306 +12. V 5 10
R3 25
6 VCC +8V R326 D305
D304
CN 301
VDY
C313 Q301 R303
-12.5V
DR IVER STAG E
T301
!
R310 Q302
!
C314
C322
Q608 ZD604
POWER DOWN CIRCU IT C650 3.3V
C324
R340
A
XS 501
UA7808 1 Vin +8V 3 8V
LI NE OUTPUT CIRCU IT
A
CN 301
HDY
GN D
C631
C632
2
G_16530_009.eps 010507
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Block Diagrams, Test Point Overviews, and Waveforms
SK1.0A CA
6.
10
Schematic Overview
CONTROL BOARD [D]
R 048 3.9K
R 047 2.4K R 046 2K SAW005
MENU
C040
VCC
LED001
R 040 1K R 041 10
M001 GND
IRO
0.022uF
MAIN BOAR D [A]
CN001 3.3V 5 IR-IN KEY-0 KEY-1
R 029 10K R 009 10K R 008 3.3K
CRT BOARD [B]
VCC3.3V L003 10uH 5V R007 3.3K C010 0.01uF 50V C008 100pF 50V R006 6.8K 1 R015 100 R014 100 R020 10K 2 3 4 5 R010 47 6 7 8 9 *2.2K 10 11 Band1 Band2 VssA SECPLL Vp2 DECDIG PH2LF PH1LF GND3 DECBG AV L VDRB VDRA IF1 IF2 IREF V SC RF-AGC AUDEEM/SIF1 DECSDEM/SIF2 GND2 SNDPLL/SIFAGC AV L/REFO VpE VddA Rout Gout Rout Blanking BCLin B2/UIN G2/YIN R2/VIN INSSW2 AUDOUT/AMOUT CHROMA CVBS/Y GND1 CVBSINT Vp1 IFVO/SVO PLLIF EHTO AUDEXT/QSSO FBISO H-OUT 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
R 300 27K
R515 15K 1/2W H201
R516 220 1/2W
D504 BAV21
R525 15K 1/2W
R 044 3.9K
R 043 2.4K
R 042 2K SAW001
PRGO-
4 3 2
R004 100 R003 10K
Q506 BF422 Q504 BF422 R510 47 R521 47 Q507 BF422
R526 220 1/2W Q509 BF422
D506 BAV21
5 ZD001 2V4 R001 10K 4 R 3 G 2 B 1 C007 10uF/16V R002 470K IR R511 1K
VCC=5V GND 1 VCC 8 7 6 5 2 3 PTC SCL SDA
SAW008
STAND BY
SAW007
F. A.S
SAW006
SAW004
VOL+
SAW003
VOL-
SAW002
PRGO+
1 H001
1
IC101
TDA9370
Standby SCL SDA VT System KEY0 KEY1 VOL VSS IRin AV 2 AV 1 VddP RESET XTALout XTALin OscGND VddC 64 63 62 61 60 59 58 57 56 C001 33pF C002 33pF L001 10uH L002 10uH C005 C006 0.01uF 100uF 50V 16V
Q001 2SC1815Y
IC102 24C08
R512 47
Q505 BF423 R513 270 R520 R522 1K 47 C503 270pF R523 270 Q508 BF423
4 VSS
TUNER
AGC VT H.S B2 B1 VCC IF
R 016 6.8K
R 017 6.8K
R103 1K C110 0.01uF 50V
R105 680
L100 1.5uH
C502 270pF
R106 33
D503 IN4148
R514 330
D505 IN4148
R524 330
C 105
C101 R114 68K R025 10K 10uF 16V
C102 0.1uF 63V
C103 C104 M 2.2uF 2.2uF 50V 50V
R102 56 Q101 2SC3779D C106 100uF 16V C107 0.022uF 100V C113 0.01uF 50V
1
2
3
4
5
R012 R011
*10K ZD201 8V2
C 201
ZD203 8V2 ZD202 8V2
100V R205 33K
1000pF
C100 0.1uF 50V
SAW101 K2972M
R030 47 R028 *4.7K C009 0.01uF /100V
C004 100uF 16V
CN201 5 4 3 2 1 R501 47 Q501 BF422 Q502 BF423 R506 15K 1/2W Q503 BF422 R507 220 1/2W D502 BAV21 R517 2.7K R527 2.7K R508 2.7K KR
2.2uF 50V R115 15K
LT 102 190319
R101 120 R111 10K R112 10K
L103 100uH C121 0.01uF/50V C015 1uF 50V C120 100uF/16V SYSTEM M:H R108 10K R109 33K R116 15K C127 10uF/16V C126 C128 C125 1uF 0.1uF 4700pF 50V 100V M C129 4.7uF 50V C122 M 0.22uF/63V M
12 13 14
R201 100 R202 100 R203 100 R204 1K
C003 0.01uF 50V
!
CRT
KG
C 011
M
R024 22K C012 0.22uF 63V
R023 22K M
63V
C123 0.22uF/63V 15 C124 2200pF 100V 16 17 18 19 20 21 22 23
0.22uF
L101 100uH D001 IN4148 R022 220 Q102 2SC1815Y ZD101 5.1V C115 .01uF 50V R107 27K Q103 2SC1815Y C109 100uF 16V R100 100 1W
KB
R110 1K
C202 0.022uF/50V C203 0.022uF/50V C204 0.022uF/50V R207 1.2K C41210uF/16V C205 1000pF/100V M C501 270pF D501 IN4148 R206 47K ZD501 8V2 R502 1K R504 47 R503 270
FRONT AV BOARD [E]
C220
R 221 75
CN202 C221 4.7uF 50V 6 5 4 3 6 AV 2 VIN 5 S-VHS-Y 4 S-VHS-C 3 GND 2 AV 2-LIN
R 237 75 R 236 75 AV 2-R I N
AV 2-VIN SVHS-Y-IN SVHS-C-IN C136 0.022uF 100V R026 33K R113 680
R529 220K C506 10uF 250V C504 1000pF 2K V H302 5 180V 3 2 1 HEAT
4.7uF/50V
Q002 2SC2216
R021 10K
C108 0.01uF/100V
R505 330
Y P404 YC/IN
C
1 P406 A2-LIN P407 A2-RIN H202
1
R238 75 C216 4.7uF/50V Y
PV1 TO PV2 (MONO)
33V
33V
C301 1000pF 100V
R117 39K C130 0.1uF M
25 26 27
C207
4.7uF/50V
C214 4.7uF/50V C131 3300pF/100V U C213 4.7uF 50V R221 5.1K 2 3 4 5 6 R224 4.7K R222 1.8K C211 4.7uF 50V R219 1K R218 2.2K R216 22K 7 8 2Y Y -COM 3Y 1Y INH VEE VSS 2X 1X X-COM TC4053 15 14 13 12 11 10 9 R214 10K R213 10K
R 631 12K 2W
28 29
R119 390
M
C138 0.1uF/63V C208 C209 100uF 0.022uF 100V 16V C323 1000pF 100V R329 27K Q104 2SC1815Y
L 104100uH
P403 Y UV-IN R225 3.9K P403-1 YUV-YIN P403-2 YUV-UIN P403-3 YUV-VIN R239 75 C212 4.7uF 50V R234 5.1K Q205 2SC1815Y Q206 2SC1815Y
1 Q204 R220 2SC1815Y 3.9K Q203 2SC1815Y 2SA1015Y U V Q202 R217 1.8K Q201 2SC1815Y R215 47K
OY
VCC
16 C210 47uF 16V R210 ZD204 100 5V1 R212 3K 3 R211 3K 3
C640 0.1uF 63V
M
C302 1000pF 100V
C132 R1182.7K
10uF/16V
30 31 32
FROM PA 1 PA 2 MONO-A-IN
C139 47uF 16V L105 15uH Q106 2SC1815Y R126 220 R125 120
IC301
TDA4863AJ
R 301 100
R 302 100
IC606 33V C639 10uF 50V
IC103
TC4052
0X 3X A B
C133 330pF C134 50V 4700pF 100V
R120 1K R123 220 R122 330 CT101 T6.5MHz CT102 T6.0MHz Q105 2SC1815Y R121 1K R128 220
C135 4.7uF/50V
TDA8356
VP3
2
R327 100K R304 1.8K
AV 1 AV 2
R124 2.2K
INP
7
INN
6
V-OUT GND VP2
5 4 3
VP1 C303 470uF 16V
1
P402 AV 1-IN
V
R228 4.7K R226 1.2K R227 1.2K R223 1.2K
0.1uF R 333 5.6
P402-1 V1-IN
P402-2 A-IN1-L
P402-3 A-IN1-R
C328 47nF 63V Q107 2SC1815Y
R 131 47
Y U V
M R332 1.8K
R 311 5.6
L106 8.2uH
C320 100uF 100V
C331 0.1uF D313 BA158 R341 0.68 1W
P401 AV -OUT R127 330 R445 100K Q406 2SC1815Y C442 10uF/16V R448 100K R235 68 R230 47 R229 220K Q207 2SC1815Y C215 2.2uF/50V CT104 T4.5MHz
C 327
R129 2.2K Q108 2SC1815Y
R331 1.8K
P401-1 V-OUT
P401-2 A-L-OUT
P401-3 A-OUT-R C440 2.2uF/50V
R306 220 2W R321 270 1W C304 .1uF
Q407 2SC1815Y
R233 470 R142 27K 13V Q401 12V C406
1000uF/16V
R305 1 2W
C441 2.2uF/50V
VOL1 NC
1 2 3 4 5 6 7 8 9 10 11 12 13 C417 4700PF 100V R409 5.6K C418 0.01uF 100V R408 5.6K TO PA 2(MONO) C423 2.2uF/50V PA 1 H601 C432 2.2uF 50V C420 0.01uF 100V R407 1K N Q402 2SA1015 CN602 VR601 1K R609 10K C402 4.7uF 50V C407 1000uF 16V C401 2.2uF/50V 12V R441 330 R444 100K C443 10uF/16V R443 1K R446 1K R417 R447 330 100K
C306 470uF 16V
F601
!
!
C601
.47uF/250V M
2SC2703
IC401 TDA7057AQ VCC
A-in1
T 3.15A/250
R410 100 R405 *87.5K R231 220K SW601
! T601
C602 0.22uF/250V 0.22uF M
T602
R602 47/5W
! !
C604 0.0047uF/500V M
T603 SKY-EC40E 7
!
4 R624 0.68 1W
D608 BYW36
R413 220 110V M L605 100uH
!
E .H.T
24
FROM PV1 V-IN(MONO)
FOC US
R222 75
PV2
SC R E E N
P405 V2-IN
R223 75
2
C206 0.1uF 63V
1 12V
A-in2 SGND VOL2 OUT2+ PGND2 OUT2OUT1PGND1 OUT1+
R 601
2.2M
R232 330
M C603 0.0047uF/500V M C605 0.0047uF/500V
!
0.0047uF/500V
C408 0.1uF/50V
ZD102 12V
!
CN601 C405 1uF 50V Q405 ZD401 2SC1815Y 5V1 L N
!
M C606 3W D605 BA158
C607 100uF 450V
1 8
R 133 33 1W
D601-604
R616 330K 1W
C614 0.0022uF ! 1K V C615 100uF 160V
680pF/500V
!
C616 R619 100uF 150K 160V 1W
R406 2.2 2W C114 0.1uF 50V
Q301 R303 2SC2482 100 C116 100uF 16V
C310 680pF 500V M
!
R313 2K 7 M T301 C312 SKY-EE19 .022uF 500V R314 8.2K R310 22
Q302 2SC2499
R328 1K E.H.T
C313 C314 8200pF 1500pF M M 2K V 2K V
R340 1.5K
!
!
!
FOCUS D303 IN4148
R618 D609 0.68 1W BYW36
2 C315 R320 3.9K M 9 SCREEN R324 560K R323 680 R330 3.9K 220pF/500V R319 4.7K D308 -12.5V BA158 M D307 BA158 M R339 0.68 1W 10 5
!
L R605 R607 6.8K 1.8K
R 608 8.2K
M
Q608 2SD400 R642 68 1W
VCC+3.3V Q605 R643 47 1W R651 560 C654 47uF 16V 2SD400 5V ZD301 8.2V C637 100uF 16V ZD605 5.6V C636 0.1uF 50V R314A 8.2K
R604 18 PTC
C 617
C611
0.1uF
9 12V 12 L606 100uH C618 1000uF
!
D607 BA158 R613 27 D606 2W BA158 Q602 B774
ZD602 9V 1 R 600 10K
!
C610 47uF 50V R612 12 1W R615 39 6W C612 M
3300pF 2K V
R652 820 ZD604 3.9V C655 47uF 16V C650 100uF 16V
(MONO:IC401=TDA7056B)
C326 1000uF 16V C318 1000uF 13V
C312 680pF 500V +12.5V
!
R317 1.5 2W
R322 1K
!
8
D306 BA158 M C317 680pF/500V
!
R315 0.68 1W 7 4 R314 0.68 1W
R325 1K T302 6 VCC +8V R326 6.8K C324 0.1uF
D304 IN4148 M D305 IN4148 33uF C322 ZD302 22V
C316 680pF D302 BA158 M C321 680pF 500V
SP-R 8 OHM
5W
H401 W B R B
CN401 4 3 2 1 C416 2.2uF/50V 1 2 3 4 5 C414 2.2uF 50V 6 7 8 OY 2Y Y -COM 3Y 1Y INH VEE VSS VCC 2X 1X X-COM 16 15 14 13 12 11 10 9 R435 10K R436 10K R412 3K 3 C400 100uF/16V C424 47uF 16V C410 0.1uF 50V D402 IN4148 ZD402 7V5 C409 220uF 16V Q601 2SC1815Y H602 R604 330
AC-INPUT
AC=220V
!
Q604 2SC5148 C608 0.033uF R611 4.7K Q603 2SC1815Y R614 0.39 3W
!
C613
C619 1000uF 16V R627 10K
Q606 2SA1013
C319 1000uF 16V
!
!
3
IC601
R626 10 1W L7808CV C631 0.1uF 50V
8V
!
R606 3K ZD601 8V2 R603 2.2 3W C609 47uF 50V
C632 100uF 16V R631 15K R629 15K
STAND BY R312 1K 5 2W L301 44uH . 1 CN302 H 1 2 2 3 4 5
!
SP-L 8 OHM 5W
C413 0.01uF/50V C411 4700PF 100V C412 0.01uF 100V
IC402 TC4052
0X 3X A B
!
! !
0.0022uF AC500V R617 8.2M/3W
CN301
R628 3K Q607 2SC1815Y
R318 22K 1/2W C310 1uF/250V C630 1uF/50V D309 BA158 S C311 0.47uF 400V
STAND BY L WORK ING H
L 601 DEGAUSSING
H301 3 H.DY 5 180V V.DY
!
G_16530_014.eps 070806
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
11
7. Circuit Diagrams and PWB Layouts
Mono Carrier: Power Supply
1 2 3 4 5 6
A1
D
POWER SUPPLY
A1
D
T3.15A 250V~
1
4
2
3
T601
T602
1
R602 C603
D501 D501
C604 C607 R616 3
7
T603
4
R624
D608
L605 110V
F601 L601
R601
C602 C601
2 C605
2
C614 C606 1 C615 8
R619 C616
3
4
1
D605 C611 R605 R607
4
9 D607 C R615 12 C617 R618 D606 C610 D609 L606 12V C618 Q401 C
R604
R601
R613 Q601 R609
PTC
t
3
C612 NPN R612 Q602 Q604 12V Q605
FBT- 7 CONTR Port IC401-4 A2
1
2
Port
A9
R604
R603 ZD602 ZD601 R606 R600 C608 R611 C613 ZD605 Q603 R643
5V C636 C637
B
C609
R614 R617
R642
Q608
B 3.3V C650
1
2
ZD604
UA7808 1 Vi n
GND
+8V
3
8V
XS501
R628 Q607 STANDBY
Q606
R626
C631
C632
A
2
A
G_16530_015.eps 010507
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2
3
4
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6
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
12
Mono Carrier: Line Deflection
1 2 3 4 5 6
A2
D
LINE DEFLECTION
A2
EHT FOCUS SCREEN
EHTO
D
C317
T302
R315 4 1 R317
FBT
!
13V D308 +12.5V -12.5V C
D306
R328
TO VERTI CAL
C312
! C
CN302
HEATER C316 D307 D302 180V C321
7 3 R314B R314A 8 R330 10 R322 R323
BCLIN
R339 2 R314 D303
B+
R325
6 VCC +8V R326 D305
B
D304
C313 T301 Q301 R303
C310 R340 C312 0.01uF R313 ! !
B
R310 Q302
C314
C322
ZD302
C324
R312 L301 C310 A D309 R318 HDY A
CN301
C311
G_16530_016.eps 030806
1
2
3
4
5
6
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
13
Mono Carrier: Frame Deflection
1 2 3 4
A3
D
FRAME DEFLECTION
A3
D
TEMPERATURE PROTECTON
DIFFERENTIAL INPUT STAGE
VERTICAL OUTPUT
FLYBACK GENERATO R
REFERENCE CIRCUIT
C
C
7
INP
R332
6
INN
5
VOUT
4
GND
3
VP2
2
VFB
1
VP1
D313
C331
C303
B
FROM DEFLECTON CONTROL
R331
R306 +12.5V B
CN301
VDY
-12.5V C327
R305
R333
C328
R311 A A
G_16530_017.eps 030806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
14
Mono Carrier: Tuner IF
1 2 3 4
A4
D
TUNER IF
A4
R106 R105 L100 D 12V
R103
R631 Q101 ZD102
RF TUNER AGC VT HS B2 B1 VCC IF
C R114 C102 R115
C110
R102 C113
SAW101
IF1 IF2 C
RF AGC
A7
Q002
LT 102 Q102
R107 Q103 R109 D001 SYSTEM
NPN B
B
BAND CONTROL
R024 C012 R023 C011 R026 RES1 R022
Q002 R020 R021 VT A8
+33V
A
A
G_16530_018.eps 030806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
15
Mono Carrier: AV I/O
1 2 3 4
A5
D
AV I/O
+8V Q 202 R215 R220 Q 204
A5
D C211 Q 201 Y R216 R219 C213 Q 203 R224 U
R218
R222
R225 Q 206 Q 205
R223
YUV
C R445 Q 406
N I
Y V
U
V
C212
R234 V R226 R228 C
IC
A9
401 R441
C401
TO
R444
IC402 A6
AV1
N I
R
L
SWITCH AV2
R443
N I
V
R
L
R227
R448 Q 407 B
Y/ N C I
A6 C Y
TO IC103 SWITCH
R230 B
IC
A9
401
R417
C441
E
FRONT AV
A7
R447
CHROMA
Q 207
R229
V
R446
R
L
AV OUT
C215 R233
IF VO
R231
R405
R235 A A
G_16530_019.eps 070806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
16
Mono Carrier: Audio/Video Source Switch
1 2 3 4
A6
D
AUDIO / VIDEO SOURCE SWITCH
+8V C210 C010 D? ZD204 R210
A6
D
IC103
1 2 0 3 4 5 6 7 8 1 2 3 3 12 11 A0 10 0 1 2 14 13 Vdd 16 15
HVSH-Y A V1 -VIN CVBS-Y
A5 A5
A7
A V2 -VIN YUV-YIN A V1
A5 A5
E Ve e Vss TC4052
2 TO 4 9 Decoder A1
IC101 CONTROL A V2
A8
C
R410
C +8V
ZD401
IC402
1
C424 Vdd 16 15
A V2 -LIN
A5
C416 2 0 3 4 1 2 3 3 5 6 7 8 12 11 A0 10 0 1 2 14 13 C423
IC401-Ain2
+8V A9
A V1 -RIN IC401-Ain1 A V2 -RIN
A5 A9 A5 A7
A V1 -LIN
A5 R445 B Q407 C440 R441
C414
E Ve e Vss TC4052
IC101-AUDOUT
+8V
B
2 TO 4 9 Decoder A1
A5
AOUT-L
C442
R444
R448 R443 R417 C441 Q407
AOUT-R
A5
R447
C?
R446
A
A
G_16530_020.eps 030806
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2
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4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
17
Mono Carrier: Video IF Sound IF
1 2 3 4 5 6
A7
D
VIDEO IF SOUND IF
FROM PA1 PA2
A9
A7
AUDIO.OUT
C412 D
VIDEO IF SOUND IF
A4
+8V
TUNER AGC
C139 Q104 R120
IFVO/SVO 38 27 35 44 12 13
C122
R123
L105
Q106
R122
CT101
R124
14 23 IF IN 24 VISION IF ALIGNMENT--FREE PLCC DEMOD AGC/AFC VIDEO AMP DEEMPHASIS AUDIO SWITCH 15 16 17 18 19 AGC CIRCUIT NARROW BAND PLL DEMODULAT OR 20
C129 1.0uF C127 C123 C120
L103 +8V C121
CT102
Q407 +8V C R121
C124
R116
C126 C
R125 Q105 C207 R128 L106 Q107 C125
40 CVBSIN
C134 R127 CT104 Q108 C128 0.1uF C132 R117 RES1 ZD201 ZD202 ZD203 C130 C131 C133 R118 C135
CVBS/Y
R129 R142 R126
42 43
A6
C
VIDEO SWITCH VIDEO IDENT VIDEO FILTERS
SYSTEM
25
26
28
29
30
31
32 51
R201 R202 R203
PAL/NTSC DECODER
B
BASE BAND DELAY LINE
LUMA DELAY PEAKING BLACK STRETCH
CONTR/BRIGHT OSD INSERT CCC WHITE-P. ADJ
52 53 49
RO GO BO
B
B
BCLIN
R204
R G B
BLKIN
R119 C138 +8V
H/V SYNC H.OSC .PLL
H.DRIVE 2nd LOOP H.SHIFT
V.DRIVER GEOMETRY
RGB/YPrPb INSERT RGB/YUV MAT RIX U SAT URAT ION YUV/RGB MAT RIX
Y V
37 39 41 45
L104 C209 C208 R207
33
R304 C302
21
C301 R327
22
36
C323 R329
46 47
48
H.OUT
A +8V
R301
R302
EHTO
A2
C202
C203
C204
A
R/Pr G/Y B/Pb
A6
V. DRIVE
G_16530_021.eps 040806
1 2 3 4 5 6
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
18
Mono Carrier: CPU Control
1 2 3 4 5 6
BAND CONTROL
A8
D
CPU CONTROL
A8
R016 +5V D R017
VCC +3.3V
VT
R008 IC102 6 1 2 3 7 SCL CE0 CE1 CE2 WC 24C08 SDA 5
A4 A4
SYSTEM
R007
L003
R003
KEY1 KEY2
IR IN
R010 R030
M001
R029 +5V +3.3V R011 R009 C
ZD001 C R001 C006 C005 R002 C007 Q001 C001
C002 R014 R015 CRYSTAL
R012
RESET
VPE
VOLUME
+3.3V R028 C015
A9
57 61
AGC CIRCUIT
60 55 58
59
2
3 1011 4 5 6
7
R006
ENHANCED 80C51 CPU
B
I2C---BUS TRANSCEIVER VST PWM--DAC I/O PORT
8 1 62 63
R214 R213
STANDY CON CON AV SWITCH
R004 C008 0.01uF
A1 A6 IR-IN B
TO DECODER TO H/V SYNC
ROM/RAM
CLOSED CAPT ACQUISITION
OSD DISPLAY
CVBS
A
H V
COR R
G B BL
A
SYNC
G_16530_022.eps 030806
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2
3
4
5
6
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
19
Mono Carrier: Audio Amplifier
1 2 3 4
A9
D
AUDIO AMPLIFIER
A9
+12V
VCC
D
IC401
IC402-13
A6 C C401
4
6
9
12
INPUT1
3 OUT1+ 13
C
DC VOLUME CONTROL1 1 OUT1- 11
TEMPERATURE PROTECTON C402
IC402-3
A6
INPUT2
A8
5
OUT2- 10
DC VOLUME CONTROL2 7
OUT2+
8
B
IC101 VOL
B
L
SPEAKER
R
A
A
G_16530_023.eps 030806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
20
Layout Mono Carrier (Top Side)
T603
C607
G_16530_010.eps 010507
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
21
Layout Mono Carrier (Bottom Side)
G_16530_011.eps 310706
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
22
CRT Panel
1 2 3 4
B
D
CRT PANEL
B
V501 CRT
D
1 HEATER 2 GND 3
5 180V C506
R529 R507 D502
R516
D504
EHT
R508
R506 Q503 Q501 C R501 Q502 R502 R511 R510 Q504
R515 Q506
R517
C R527 Q505
5 GND 4 BO 3 RO 2 GO 1 +8V
R504
R503 R505
R512
C504
R513 R514
C501 D501
C502 D503 R525 R526 D506
ZD501 Q509 B Q507 R521
SCREEN
FOCUS
B
R520
Q508
R522
R523 R524
C503
D505
A
A
G_16530_025.eps 030806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
23
Layout CRT Panel (Top Side)
Layout CRT Panel (Bottom Side)
G_16530_027.eps 310706
G_16530_026.eps 310706
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
24
Front Control
1
2 A8
3
4
D
D
FRONT CONTROL
D
D
IR OUT
R041 C040
+5
M001
C
R040 LED001 Q000 R000 STANDBY C
R? RES1 R? RES1 B SAW008 R? RES1 SAW007 R? RES1 SAW006 SAW005 R? RES1 SAW004 R? RES1 SAW003 SAW002 SAW001 KEY1 B
KEY0 A A
G_16530_024.eps 030806
1
2
3
4
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
25
Layout Front Control Panel (Top Side)
G_16530_012.eps 310706
Layout Front Control Panel (Bottom Side)
G_16530_013.eps 310706
Circuit Diagrams and PWB Layouts
SK1.0A CA
7.
26
Front AV
E
FRONT AV
Remark: For electrical diagram see [A5]
Layout Front AV Panel (Top Side and Bottom Side)
G_16530_041.eps 070806
Alignments
SK1.0A CA
8.
EN 27
8. Alignments
Index of this chapter: 8.1 General Alignment Conditions 8.2 Hardware Alignments 8.3 Software Alignments 8.5 Option Settings
8.4
Factory mode specification adjustment
Notes: · Attention: of each menu item, first make a note of the current value; secondly, note the minimum/maximum value of the range that can be adjustend. · (default value / adjustment range) - this item must be set up to its default value within the possible range; · (reference value) - this item can depend on the production circumstances and the product parameters (which may show slight variations), so only reference values are given here; · (unnecessary to adjust) - this item is unnecessary to adjust. The factory mode includes 11 periphery menus and 4 core menus. You must input the code "789" in the eleventh periphery menu if you want to enter the last two core menus. The switching between the periphery menus takes place using the PRO key "+"and "-". The switching between the core menus is done via the "MENU" key. All the values found in the various menu items can be adjusted via the VOL key ("+"and "-"). The values found in the Core menu must be adjusted via the PRO key ("+"and "-"). Adjustment details are given below. Press the factory mode key to enter the factory mode. The PRO key "-" will give the opposite result, you will then leave the factory mode again. · Brightness balance RED adjustment menu (press key "1" to enter this menu) WPR - 1F / 00-3F (default value / adjustment range) Brightness balance GREEN adjustment menu (press key "2" to enter this menu) WPG - 1F / 00-3F (default value / adjustment range) Brightness balance BLUE adjustment menu (press key "3" to enter this menu) WPB - 1F / 00-3F (default value / adjustment range) Dark balance RED adjustment menu (press key "4" to enter this menu) RED - 1F / 00-3F (default value / adjustment range) Dark balance GREEN adjustment menu (press key "5" to enter this menu) GRN - 21 / 00-3F (default value / adjustment range) AGC adjustment menu: AGC - 03 / 00-03 (default value / adjustment range) RFAGC adjustment menu: RFAGC - 18 / 00-3F (default value / adjustment range)
8.1
8.1.1
General Alignment Conditions
Default Alignment Settings Perform all electrical adjustments under the following conditions: · Power supply voltage: 230 VAC / 50 Hz (± 10 %). · Connect the set to the mains via an isolation transformer with low internal resistance. · Allow the set to warm up for approximately 20 to 30 minutes. · Measure voltages and waveforms in relation to chassis ground (with the exception of the voltages on the primary side of the power supply). Caution: never use heatsinks as ground. · Test probe: 100 : 1, Ri > 10 Mohm, Ci < 3.5 pF. · Use an isolated trimmer/screwdriver to perform alignments.
8.2
Hardware Alignments
Note: The only hardware alignment in this TV set is the adjustment of the main voltage (B+), see below.
· 8.2.1 Main Voltage Adjustment In order to adjust the main voltage, connect a voltage meter to J601, and adjust VR601 to a voltage of 110 V. ·
8.3
Software Alignments
Put the set in its MENU mode (factory mode or otherwise) as follows (see also figure "Factory Mode" on the next page): · Set the volume to "0" via the volume button on the TV set. · Select the [i+] button on the RC while depressing the volume key. · Use the "up" or "down" button on the RC to navigate to a different Peripheral Menu, if necessary. · Use the "MENU" button on the RC to navigate to a different Core Menu, if necessary. · Press the "MENU" button on the RC to switch from the Peripheral Menu to the Core Menu. · Press the "6" button on the RC to switch from the Core Menu to the Peripheral Menu. · In the Peripheral Menu (after pressing "6"), enter the code "789" will make available the extra four core Menu blocks PE-1, PE-2, PE-3 and EP2-WRITE for editing. Press the "MENU" button on the RC to switch from the Peripheral Menu to the Core Menu, using MENU key to navigate through the available 6 core menu blocks. The different alignment parameters are described further on.
·
·
· ·
Adjustment method: First, receive a video signal of 60 dBµV; next, enter the factory mode and adjust the level of the RFAGC, until the image is completely noise-free (without snowflakes). · Decode block audio signal output extent adjustment menu: VOL - 2C / 00-3F (default value / adjustment range) · Aging mode menu: AGING · SCREEN adjustment menu (make sure you have set the VG2-B item of the core menu PE-2 to 3F before you adjust this item) VG2: IS OK Adjustment method: Receive a video signal of any content, then set the Brightness and Contrast values of the image menu at their middle positions (level 50). · Adjustment of the screen voltage of the horizontal output transformer: make sure the screen displays the message VG2: IS OK · Code input menu (press key "6" will enter the menu quickly): P-MOD_ _ _
8.3.1
GEOMETRY Notes: · Set an external pattern generator to a crosshatch video signal and connect the RF output to the aerial input of the TV. Set the amplitude at least 1 mVRMS (60 dBµV) and the frequency to 475.25 MHz. Use system PAL B/G if possible, otherwise match the system of your generator with the received signal in the set.
EN 28
8.
SK1.0A CA
Alignments
Enter factory mode: 1. Set volume to "0" with the volume button on the set. 2. Select "i+" button on RC while depressing the volume key. 3. Select "up" or "down" button to navigate to different peripheral menu 4. Select "MENU" key to navigate to different core menu. 5. Switch from peripheral menu to core press "Menu" key. 6. Switch from core to peripheral menu press "6". 7. Enter code "789" at the peripheral menu after pressing "6" or scroll to the menu in the red box below
Periphery menu "up" and "Down" Key Main core menu "Menu" key Additional core menu after the "789" code
"MENU"
CPU: 3P60-6202-46K-EEP: 3P600627 ===================== ===================== STS : 01110000 STS : 01010001 STS : 10001001 STS : 01111111 STS : 11110111
Arrow "UP" and "DOWN"
CORE MENU SER50HZ HPOS H-AMP V-SLP V-POS V-AMP V-SC
PERIPHERAL MENU CPU: 3P60-6202-46K-EEP: 3P600627 1F 3F 1F 3F 1F 3F 1F 3F 1F 3F 1F 3F Press "6" P-MOD AGC 03 00-03 00000011 CPU: 3P60-6202-46K-EEP: 3P600627
Press "Menu"
SER50HZ EWPA TRAP PARA UCP BCP BOW
CPU: 3P60-6202-46K-EEP: 3P600627 1F 3F 1F 3F 1F 3F 1F 3F 1F 3F 1F 3F P-MOD GRN 1F 00-3F 00011111
VGS : OUTSIDE HIGH
Extra Core Menu after code "789" is entered
PE-1 OP1 OP2 OP3 OP4 OP5 OSD-BRI YDTP S-COLOR S-SHARP
CPU: 3P60-6202-46K-EEP: ======== 52 FF 06 FF 08 FF 23 FF 68 FF 00 03 07 0F 1F 3F 1F 3F AGING
CPU: 3P60-6202-46K-EEP: 3P600627 RED 1F 00-3F 00011111
PE-2 FOR VX OSD-H 5VOSD IFFS VG2-B RPO-D CL AFC AS-SB INIT
CPU: 3P60-6202-46K-EEP: 3P600627 03 03 19 3F 06 CF 24 32 03 07 30 3F 30 3F 07 0F 0A 1F 00 FF 00 FF CPU: 3P60-6202-46K-EEP: 3P600627 VOL 2F 00-3F 00101111 WPB 1F 00-3F 00011111
PE-3 CURVES1 CURVE2 CURVE3 CURVE4 CURVE5
CPU: 3P60-6202-46K-EEP: 3P600627 0D 3F 21 3F 28 3F 2F 3F 39 3F RFAGC 12 00-3F 00010010
CPU: 3P60-6202-46K-EEP: 3P600627 WPG 1F 00-3F 00011111
E2P-WRITE BANK INDEX DATA WRITE
CPU: 3P60-6202-46K-EEP: 3P600627 00 03 00 FF 00 FF WPR 1F 00-3F 00011111
G_16530_040.eps 030806
Figure 8-1 Factory Mode
Alignments
After entering the code "789" and pressing the "menu" key, the core menu will be displayed orderly, or only 2 core menus will be displayed. The content of the core menu is given below: i. Press key "menu" to display the core menu as below: · Horizontal parameter adjustment menu (Before adjusting the items of this menu, receive the pane signal or P-card signal, then enter the factory mode to start adjustment) i. SER50HZ. ii. H-POS 2C 3F (reference value) Horizontal center. iii. H-AMP 1D 3F (no value) Horizontal amplitude. iv. V-SLP 1F 3F (reference value) Vertical slope. v. V-POS 16 3F (reference value) Vertical center. vi. V-AMP 09 3F (reference value) Vertical amplitude. vii. V-SC 12 3F (reference value) Vertical linearity. The above items are all ordinary parameter adjustments. It is unnecessary to explain those in detail. However, pay attention to the fact that the NTSC and PAL Vertical parameter adjustments of this chassis must take place separately from each other. · Linearity adjustment menu: (the adjustment of the items under this menu is unnecessary) i. SER50HZ. ii. EWPA 1F 3F. iii. TRAP 1F 3F. iv. PARA 1F 3F. v. UCP 1F 3F. vi. BCP 1F 3F. vii. BOW 1F 3F. Character position, SPK system etc. adjustment menu: (Attention:OP1 and OP2 are different from each other depending on different modes). Attention: The menu given below can only be entered when the code "789" is input in the eleventh periphery menu. · PE-1 i. OP1 as below FF (default value / adjustment range) Switch setup of video control, commutative flat. etc. ii. OP2 as below FF (default value / adjustment range) Switch setup of SPK system, menu mode. etc. iii. OP3 08 FF (default value / adjustment range) Switch setup of Vertical protection, super incept. etc. iv. OP4 30 FF (default value / adjustment range) rest of setup v. VX 19 3F (unnecessary to adjust) Vertical magnify. vi. IFFS 03 07 (default value / adjustment range) intermediate frequency adjustment vii. OSD-H 85 CF (default value / adjustment range) character Horizontal position viii. 5VOSD 2E 2A (default value / adjustment range) character Vertical position ix. YDTN 07 0F (unnecessary to adjust) brightness delay Below are the setups of OP1 and OP2 for different modes: · 2122MK - 21NKMS - 21TNMS i. OP1 C2 - CE - DE ii. OP2 C2 - C2 - CA · Character position (5VOSD and OSD-H) adjustment method: Adjust the parameters, make sure the "channel switch" menu is at the center of the screen. The value of the parameters is the reference value that was provided by the RAM, it is unnecessary to adjust this in general. · Blueness screen frequency, RGB output extent adjustment menu, PE-2 i. FOR 03 / 03 (default value / adjustment range) Blueness screen frequency settings. ii. VX 19 / 3F (unnecessary to adjust) Vertical expansion iii. OSD_BRI 03 / 00 (default value / adjustment range). OSD brightness adjustment. iv. OSD-H 06 / CF (default value / adjustment range). OSD horizontal position adjustment
SK1.0A CA
8.
EN 29
·
·
·
v. 5VOSD 30 / 32 (default value / adjustment range). OSD vertical posiont adjustment vi. VG2-B 30 / 3F (default value / adjustment range) Screen adjustment. vii. RPO-C 3F / 00 (default value / adjustment range) MSB 4 bits - RPO adjustment LSB 4 bits - Dynamic Noise-reduction adjustment viii. CL 07 / 0F (default value / adjustment range) RGB output extent. ix. IFO 0A / 1F (unnecessary to adjust) Fine-adjustment of intermediate frequency. x. AS-SB FF / 06 (unnecessary to adjust) MSB 4 bits - AV sharpness compensation LSB 4 bits - AV brightness adjustment xi .INIT 00 FF Replace all factory settings. VG2-B adjustment method: If you cannot reach the desired effect via the tenth item of the periphery menu, you should try to change the value of this item properly (hardware adjustment), and then adjust the screen in the tenth item of the periphery menu (software adjustment). Volume profile adjustment Menu, PE-3 The volume profile of 0-100 is divided into 5 parts for adjustment. CURVES1 0D 3F Volume (0-20) profile adjustment CURVES2 21 3F Volume (20-40) profile adjustment CURVES3 28 3F Volume (40-60) profile adjustment CURVES4 2F 3F Volume (60-80) profile adjustment CURVES5 39 3F Volume (80-100) profile adjustment E2P - WRITE BANK 00 03 (default value / adjustment range) INDEX 00 03 (default value / adjustment range) DATA 00 FF (default value / adjustment range) WRITE
8.5
8.5.1
Option Settings
Introduction The microprocessor communicates with a large number of I2C ICs in the set. To ensure good communication and to make digital diagnosis possible, the microprocessor has to know which ICs to address. The presence / absence of these specific ICs (or functions) is made known by the option codes.
8.5.2
Changing options Enter the factory mode, as has been decribed earlier in this chapter. All changes in the option settings are saved as soon as the you leave the menu. Some changes will only take affect after the set has been switched OFF and ON with the mains switch (cold start).
8.5.3
Option Settings In the table below, you will find the option settings.
EN 30
8.
SK1.0A CA
Alignments
Table 8-1 Option bits (can be switched on or off in factory mode; 0 = OFF; 1 = ON) Option Byte Number (OP1... OP5) 1 Option Name Bit Number (Dec. value) 0 (1) 1 (2) 2 (4) 3 (8) 4 (16) 5 (32) 6 (64) 2 7 (128) 0 (1) 1 (2) 2 (4) 3 (8) 4 (16) 5 (32) 6 (64) 3 7 (128) 0 (1) 1 (2) 2 (4) 3 (8) 4 (16) 5 (32) 6 (64) 4 7 (128) 0 (1) 1 (2) 2 (4) 3 (8) 4 (16) 5 (32) 6 (64) 5 7 (128) 0 (1) 1 (2) 2 (4) 3 (8) 4 (16) 5 (32) 6 (64) 7 (128) OP_BG_SOUND OP_DSK OP_AV2 OP_SVHS OP_DVD OP_SENSI OP_AI OP_SCREEN_SAVER Not applicable OP_AUTO_SOUND OP_FMWS OP_16_9 OP_FSL OP_OSO OP_MESH Not applicable OP_SMU OP_RGB OP_FCO OP_FADE OP_VOLUME OP_FFI OP_EFF_0 OP_EFF_1 OP_SYNC_Y OP_YPRPB OP_VG2-MODE OP_IDENT_SENSI OP_MUSIC_TV OP_IDENT_SL OP_IDENT_IFI OP_MUS OP_CALENDAR OP_NOISE OP_3036 OP_VST OP_BARCODE OP_CLUT OP_BLUE Not applicable Features
BG System on/off Dynamic Skin Tone Correction AV2 selection S-video selection DVD selection sensitivity Rear AV screen saver on/off Not applicable automatic sound switch bandwith of sound channel 16:9 selection Vertical Sync Enhancement turn off the set and discharge the CRT outside the visible part of the screen translucent menu on/off Not applicable restore factory settings scanning beam position colour system selection (automatic - non automatic) Program Switch Mode (FADE) automatic volume fast filter IF-PLL sound effect selection sound effect selection YUV synchronisation selection YUV input selection screen adjustment mode selection colour sensitivity Allow audio throughput ("0") or not ("1") without the presence of a video signal Identification signal_SL Identification signal_IFI N system selection (0 = American system; 1 = Japanese system) perpetual calendar dynamic noise reduction 4P36 chassis selection tuner voltage barcode OSD character tint selection default blue screen selection Not applicable
SK1.0A CA 0 1 1 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 0 0 0 0 1 1 0 0 0 1 0 0 0 0 0 1 0 1 1 0
Circuit Descriptions, Abbreviation List, and IC Data Sheets
SK1.0A CA
9.
EN 31
9. Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter: 9.1 Introduction 9.2 The various circuits 9.3 Abbreviation List 9.4 IC Data Sheets
9.3
Abbreviation List
2CS A2 AC ACI 2 Carrier Sound Commonly known as 2 Carrier Sound (2CS) system Alternating Current Automatic Channel Installation: algorithm that installs TV channels directly from a cable network by means of a predefined TXT page Analogue to Digital Converter Automatic Frequency Control: control signal used to tune to the correct frequency Automatic Gain Control: algorithm that controls the video input of the feature box Amplitude Modulation Automatic Noise Reduction; One of the algorithms of Auto TV Asia Pacific Aspect Ratio: 4 by 3 or 16 by 9 Audio Video Automatic Volume Level control Monochrome TV system. Sound carrier distance is 5.5 MHz Beam Current Limiter Circuit Board Assembly (or PWB) Carbon Film Resistor Computer aided rePair Cathode Ray Tube (or picture tube) Composite Video Blanking and Synchronisation Component Video Input Monochrome TV system. Sound carrier distance is 6.5 MHz. D= VHFband, K= UHF-band Digital to Analogue Converter Direct Current Filament supply voltage Directions For Use: owner's manual Dolby Pro Logic Dynamic RAM; dynamically refreshed RAM Digital Versatile Disc Electrically Erasable and Programmable Read Only Memory Extreme High Tension; the voltage between the cathode and the shadow mask that accelerates the electrons towards the screen (around 25 kV) Electro Magnetic Interference; Leakage of high-frequency radiation from a transmission medium EUrope East West, related to horizontal deflection of the set East -West correction drive signal. EXTernal (source), entering the set by SCART or by cinches (jacks) Fast Blanking: DC signal accompanying RGB signals Front End; Tuner and RF part together Each interlaced broadcast FRAME is composed of two Fields, each Field consists of either Odd or Even lines Filament of CRT Field Memory / Frequency Modulation A complete TV picture comprising all lines (625/525) Flat TeleVision
9.1
Introduction
The SK1.0A CA is a CRT TV for the year 2006, based on the 3P60 platform. In this chapter, only a general description of the various circuits is given. For more detailed information, see the circuit diagrams in this manual.
ADC AFC
9.2
9.2.1
The various circuits
Tuner The function of the tuner is to select the channel to be received and suppress the interference of neighboring channels, to amplify the high frequency signal, to improve the receiving sensitivity and SNR, and to generate a PIF signal through frequency conversion.
AGC
AM ANC AP AR AV AVL B/G BCL CBA CFR ComPair CRT CVBS CVI D/K
9.2.2
IF Channel The IF Channel mainly ensures the sensitivity and selectivity of the complete TV set. The IF AMP integrated in the TDA9370 is made up of a three-stage dual-differential amplifier with a gain value above 70dB, a SNR of 55dB and a bandwidth of 7MHz. The video demodulation circuit is made from the built-in PLL Sync Detector. The spectrum of the demodulation carrier is unitary and it is not affected by the content of the video signal. The tuner features stable receptivity while the signal output from the video detector features high fidelity. The built-in PLL circuit of the TDA9370 generates a 38.0MHz or 38.9MHz demodulation reference signal for the sync detector to demodulate the video signal; this is called "PLL sync demodulation".
9.2.3
Sound Channel An external ceramic filter is used to select the second SIF signal for the sound channel of TDA9370 from the signal output of the video detector. The audio signal is obtained after limiting amplification and demodulation by the intermediate frequency detector for the SIF signal, and then the audio signal is output to the audio amplifier TDA7057AQ, which drives the speaker to provide the sound. The intermediate frequency detector and volume-control attenuator that are built in the TDA9370 are set and adjusted via the CPU.
DAC DC DC-filament DFU DPL DRAM DVD EEPROM EHT
EMI
9.2.4
CRT Drive Circuit In the driver circuit, both the voltage and current of the R/G/B signal are amplified, after which the CRT drive circuit modulates the cathode beam current of the CRT. The R/G/B signal input into the driver circuit is of negative polarity.
EU EW EW-DRIVE EXT FBL FE Field
9.2.5
Power Supply Circuit The function of the power supply cicuit is to supply various stabilized operating voltages and to provide protections against excessive voltages and currents.
Filament FM Frame FTV
EN 32
9.
SK1.0A CA
Circuit Descriptions, Abbreviation List, and IC Data Sheets
PCB PLL Printed Circuit Board (or PWB) Phase Locked Loop; Used for e.g. FST tuning systems. The customer can directly provide the desired frequency Scan mode where all scan lines are displayed in one frame at the same time, creating a double vertical resolution. Positive Temperature Coefficient, non linear resistor (resistance increases if temperature increases) Printed Wiring Board (also called PCB or CBA) Quasi Split Sound Right audio channel / Red Random Access Memory Remote Control transmitter Remote Control system 5 (6), the signal from the remote control receiver Real Flat (picture tube) or Radio Frequency Red, Green, and Blue colour space; The primary colour signals for TV. By mixing levels of R, G, and B, all colours (Y/C) are reproduced Red, Green, Blue, Horizontal sync, and Vertical sync Root Mean Square value Read Only Memory Secondary Audio Program; Generally used to transmit audio in a second language Surface Acoustic Wave SandCastle: two-level pulse derived from sync signals Short Circuit Serial Clock signal on I2C bus Standard Definition Serial Data line of I2C bus Synchronous DRAM Sound Intermediate Frequency Surface Mounted Component Surface Mounted Device Switched Mode Power Supply SouND Static RAM STandBY Super Video Home System To Be Defined Teletext; TXT is a digital addition to analogue TV signals that contain textual and graphical information (25 rows x 40 columns). The information is transmitted within the first 25 lines during the Vertical Blank Interval (VBI) Microcontroller Ultimate One Chip Microprocessor Colour difference signals V_sync Main supply for deflection (usually 141 V) Vertical Acquisition Vertical Blanking Interval; Time during which the video signal is blanked when going from bottom to top of the display Video Cassette Recorder Video Graphics Array Video Intermediate Frequency Write Enable control line World System Teletext Quartz crystal Luminance signal
G H H-DRIVE H-FLYBACK H-OUT HA HFB HW I
I2 C I2 S IC IF IIC Interlaced
IO IR L L/L'
LATAM LED LOT
LS M/N
MOFR MOSFET MPX NAFTA
NC NICAM
NTC
NTSC
NVM
OB OC OP OSD P50 PAL
Green H_sync to the module Horizontal Drive Horizontal Flyback H_sync output of the module / Horizontal Output pulse Horizontal Acquisition; horizontal sync pulse Horizontal Flyback Pulse; Horizontal sync pulse from large signal deflection Hardware Monochrome TV system. Sound carrier distance is 6.0 MHz. VHF- and UHF-band Inter IC bus (also called IIC) Inter IC Sound bus Integrated Circuit Intermediate Frequency Inter IC bus (also called I2C) Scan mode where two fields are used to form one frame. Each field contains half the number of the total amount of lines. The fields are written in "pairs", causing line flicker. In/Out Infra Red Left audio channel Monochrome TV system. Sound carrier distance is 6.5 MHz. L' is Band I, L is all bands except for Band I LATin AMerica Light Emitting Diode Line Output Transformer (also called FBT); The transformer in which the EHT is generated Loud Speaker Monochrome TV system. Sound carrier distance is 4.5 MHz. M= 525 lines @ 60 Hz, N= 625 lines @ 50 Hz Metal Oxide Film Resistor Metal Oxide Semiconductor Field Effect Transistor MultiPleX North American Free Trade Association: Trade agreement between Canada, USA and Mexico Not Connected Near Instantaneously Companded Audio Multiplexing; This is a digital sound system, mainly used in Europe Negative Temperature Coefficient, non-linear resistor (res