Daewoo CP-520 User manual

http : //svc.dwe.co.kr
Caution
: In this Manual, some parts can be changed for improving. their
performance without notice in the parts list. So, if you need the
latest parts information, please refer to L( arts rice List)in
Service Information Center(http://svc.dwe.co.kr)
DAEWOO ELECTRONICS Corp.
Service Manual
June. 2004
COLOR TELEVISION
CHASSIS : CP-520
MODEL : DTY-28A8/28A6/28A7
DTY-2880/28W5
DTY-21U7/21B4
DTY-25G6/25G7
CHASSIS : CP-520A
MODEL : DTC-20T2
DTC-21Y1/21Y2
CHASSIS : CP-520F
MODEL : DTZ-29U7/U3
DTZ-2881/28W8
DTZ-2481
P/N:TCP520BEF0

CP-520/520A/520F Service Manual
DTV R&D Europe 1
CONTENTS
DOCUMENT HISTORY................................................................................................................. 3
1MAIN FEATURES.................................................................................................................. 4
1.1 SPECIFICATIONS.......................................................................................................... 4
1.1.1 GENERAL................................................................................................................ 4
1.1.2 EURO-SCART 1 (21 Pin)......................................................................................... 4
1.1.3 EURO-SCART 2 (21 Pin)......................................................................................... 5
1.2 CHANNEL/FREQUENCY TABLE.................................................................................. 6
2SAFETY INSTRUCTION ....................................................................................................... 9
3ALIGNMENT INSTRUCTIONS............................................................................................ 10
3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE................................... 10
3.2 SERVICE MODE NAVIGATION................................................................................... 10
3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS........................................ 10
3.4 OPTION 1..................................................................................................................... 11
3.5 OPTION 2..................................................................................................................... 11
3.6 NVM DEFAULT SETTING............................................................................................ 12
3.7 TV SET ALIGNMENT................................................................................................... 14
3.7.1 G2 ALIGNMENT.................................................................................................... 14
3.7.2 WHITE BALANCE ................................................................................................. 14
3.7.3 FOCUS.................................................................................................................. 14
3.7.4 VERTICAL GEOMETRY........................................................................................ 14
3.7.5 HORIZONTAL PICTURE CENTRING................................................................... 14
3.7.6 EAST / WEST CORRECTION............................................................................... 14
3.7.7 AGC....................................................................................................................... 15
4IC DESCRIPTION................................................................................................................ 16
4.1 UOC III SERIES............................................................................................................. 16
4.1.1 IC MARKING AND VERSION................................................................................ 16
4.2 TDA8946J STEREO AUDIO AMPLIFIER.................................................................... 24
4.2.1 FEATURES............................................................................................................ 25
4.3 TDA8358J VERTICAL AMPLIFIER ............................................................................. 27
4.3.1 TDA8358J.............................................................................................................. 27
4.4 TDA6107AJF................................................................................................................ 29
4.4.1 Features................................................................................................................. 29
4.4.2 Pin description....................................................................................................... 29
4.5 24WC16 -16 KB EEPROM.......................................................................................... 30
4.6 STR -F6653 ................................................................................................................. 31
4.6.1 GENERAL DESCRIPTION.................................................................................... 31
4.6.2 FEATURES............................................................................................................ 31
4.6.3 BLOCK DIAGRAM................................................................................................. 31
4.6.4 PIN DESCRIPTION............................................................................................... 32
4.6.5 CONTROL PART -ELECTRICAL CHARACTERISTICS....................................... 32
4.6.6 MOSFET ELECTRICAL CHARACTERISTICS...................................................... 33
5CIRCUIT DESCRIPTION..................................................................................................... 34
5.1 BLOCK DIAGRAM....................................................................................................... 34
5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR........................................... 35
5.2.1 Vision IF amplifier.................................................................................................. 35
5.2.2 QSS sound circuit.................................................................................................. 35
5.2.3 FM demodulator..................................................................................................... 35
5.2.4 Audio input selector and volume contro................................................................. 36

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5.2.4.1 STEREO AND AV STEREO VERSIONS........................................................... 36
5.2.4.2 MONO VERSIONS ............................................................................................ 36
5.2.5 CVBS and Y/C input signal selection..................................................................... 36
5.2.5.1 ALL VERSIONS................................................................................................. 36
5.2.6 Synchronisation circuit........................................................................................... 37
5.2.7 Horizontal and vertical drive................................................................................... 38
5.2.8 Chroma, luminance and feature processing .......................................................... 38
5.2.9 Colour decoder...................................................................................................... 39
5.2.10 RGB output circuit.................................................................................................. 40
5.2.11 I2C-BUS USER INTERFACE DESCRIPTION....................................................... 42
5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR.............. 42
5.3.1 Supported standards ............................................................................................. 43
5.4 FUNCTIONAL DESCRIPTION SOUND PROCESSOR ............................................... 44
5.4.1 The UOC III TV Sound Concept ............................................................................ 44
5.4.2 Functional Overview Of the digital controller sound part........................................ 45
5.4.3 Demodulator and decoder..................................................................................... 46
6SERVICE PARTS LIST ....................................................................................................... 49
6.1 DTY-28A8FZF-S........................................................................................................... 49
6.2 DTC-20T2FZS-S........................................................................................................... 54
6.3 DTC-21Y1FZF-S........................................................................................................... 59
6.4 DTZ-29U7FZS-S........................................................................................................... 64
7EXPLODED VIEW............................................................................................................... 69
7.1 DTY-28A8..................................................................................................................... 69
7.2 DTY-2880 ..................................................................................................................... 70
7.3 DTY-21U7..................................................................................................................... 71
7.4 DTC-20T2..................................................................................................................... 72
7.5 DTC-21Y1..................................................................................................................... 73
7.6 DTZ-29U7..................................................................................................................... 74
7.7 DTZ-2881...................................................................................................................... 75
7.8 DTZ-2481...................................................................................................................... 76
8PRINTED CIRCUIT BOARD................................................................................................ 77
8.1 4859809693(CP-520) ................................................................................................... 77
8.2 4859809893(CP-520A)................................................................................................. 78
8.3 4859809993(CP-520F)................................................................................................. 79
9SCHEMATIC DIAGRAM...................................................................................................... 80
9.1 CP-520.......................................................................................................................... 80
9.2 CP-520A....................................................................................................................... 81
9.3 CP-520F ....................................................................................................................... 82

CP-520/520A/520FService Manual
DTV R&D Europe 3
DOCUMENT HISTORY
VERSION DATE COMMENTS
V1.00 12/05/04 Creation of document (Author JS KIM)for project CP520 50Hz TV.

CP-520/520A/520FService Manual
DTV R&D Europe 4
1MAIN FEATURES
1.1 SPECIFICATIONS
1.1.1 GENERAL
TV standard PAL -SECAM B/G D/K, PAL I/I, SECAM L/L’
Tuner PAL, SECAMColour system AV PAL, SECAM, PAL 60, NTSC M, NTSC 4.43
Sound system NICAM B/G, I, D/K, L,
FM 2Carrier B/G, D/K
Power
consumption 20”,21”: 49W 21”(4:3) Flat : 59W
28”(4:3) : 69W
28”(16:9) : 69W
Sound Output
Power 20”~ 24”: 4.5W x 2 (at 60% mod, 10% THD) 25”~ 29”: 7W x 2 (at 60% mod, 10%THD)
Speaker 20”~ 24”: 7.5W 8 ohm x 2
25”~ 29”: 12W 8 ohm x2
Teletext system 10 pages memory FASTEXT (FLOF or TOP)
Aerial input 75 ohm unbalanced
Channel coverage Off-air channels, S-cable channels and hyperband
Tuning system frequency synthesiser tuning system
Visual screen size 20”: 48cm
21” : 51cm
28”: 66cm
Channel indication On Screen Display
Program Selection 100 programmes
Aux. terminal EURO-SCART 1 : Audio / Video In and Out, R/G/B
In, Slow and Fast switching.
EURO-SCART 2 : Audio / Video In and Out, SVHS
In.
AV3 : Audio-Video Jack on front of cabinet.
Headphone jack (3.5 mm) on front of cabinet
SVHS3 (option) : Jack on front of cabinet –sound
input common with AV3.
Remote Control
Unit R-46G22
1.1.2 EURO-SCART 1 (21 Pin)
Pin Signal Description Matching value
1Audio Output Right 0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
2Audio Input Right 0.5 Vrms, Impedance > 10 kΩ
3Audio Output Left 0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
4Audio Earth
5Blue Earth
6Audio Input Left 0.5 Vrms, Impedance > 10 kΩ
7Blue Input 0.7 Vpp ±0.1V, Impedance 75Ω

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8Slow Switching TV : 0 to 2V, AV 16/9 : 4.5 to 7V, AV 4/3 : 9.5 to 12V , Impedance
> 10 kΩ
9Green Earth
10 N.C.
11 Green Input 0.7 Vpp ±0.1V, Impedance 75Ω
12 N.C.
13 Red Earth
14 Blanking Earth
15 Red Input 0.7 Vpp ±0.1V, Impedance 75Ω
16 Fast Switching 0 to 0.4V : Logic “0”, 1 to 3V : Logic “1”, Impedance 75Ω
17 Video Out Earth
18 Video In Earth
19 Video Output 1 Vpp ±3dB, Impedance 75Ω
20 Video Input 1 Vpp ±3dB, Impedance 75Ω
21 Common Earth
1.1.3 EURO-SCART 2 (21 Pin)
Pin Signal Description Matching value
1Audio Output Right 0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
2Audio Input Right 0.5 Vrms, Impedance > 10 kΩ
3Audio Output Left 0.5 Vrms, Impedance < 1 kΩ, ( RF 54% Mod )
4Audio Earth
5Earth
6Audio Input Left 0.5 Vrms, Impedance > 10 kΩ
7N.C.
8N.C.
9N.C.
10 N.C.
11 N.C.
12 N.C.
13 Earth
14 Earth
15 Chroma Input ±3dB for a luminance signal of 1 Vpp
16 N.C.
17 Earth
18 Video In Earth
19 Video Output 1 Vpp ±3dB, Impedance 75Ω( Monitor output )
20 Video Input, Y In. 1 Vpp ±3dB, Impedance 75Ω
21 Common Earth

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1.2 CHANNEL/FREQUENCY TABLE
CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT
C01 46.25 -45.75 49.75
C02 48.25 55.75 (L') 53.75 59.25
C03 55.25 60.5 (L') 61.75 77.25
C04 62.25 63.75 (L') 175.25 85.25
C05 175.25 176.00 183.25 93.25
C06 182.25 184.00 191.25 175.25
C07 189.25 192.00 199.25 183.25
C08 196.25 200.00 207.25 191.25
C09 203.25 208.00 215.25 199.25
C10 210.25 216.00 223.25 207.25
C11 217.25 189.25 (LUX) 231.25 215.25
C12 224.25 69.25 (L') 239.25 223.25
C13 53.75 76.25 (L') 247.25 -
C14 -83.25 (L') 49.75 -
C15 82.25 90.25 57.75 -
C16 -97.25 65.75 -
C17 183.75 -77.75 -
C18 192.25 -85.75 -
C19 201.25 ---
C20 ----
C21 471.25 471.25 471.25 471.25
C22 479.25 479.25 479.25 479.25
C23 487.25 487.25 487.25 487.25
C24 495.25 495.25 495.25 495.25
C25 503.25 503.25 503.25 503.25
C26 511.25 511.25 511.25 511.25
C27 519.25 519.25 519.25 519.25
C28 527.25 527.25 527.25 527.25
C29 535.25 535.25 535.25 535.25
C30 543.25 543.25 543.25 543.25
C31 551.25 551.25 551.25 551.25
C32 559.25 559.25 559.25 559.25
C33 567.25 567.25 567.25 567.25
C34 575.25 575.25 575.25 575.25
C35 583.25 583.25 583.25 583.25
C36 591.25 591.25 591.25 591.25
C37 599.25 599.25 599.25 599.25
C38 607.25 607.25 607.25 607.25
C39 615.25 615.25 615.25 615.25
C40 623.25 623.25 623.25 623.25
C41 631.25 631.25 631.25 631.25
C42 639.25 639.25 639.25 639.25
C43 647.25 647.25 647.25 647.25
C44 655.25 655.25 655.25 655.25
C45 663.25 663.25 663.25 663.25

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C46 671.25 671.25 671.25 671.25
C47 679.25 679.25 679.25 679.25
C48 687.25 687.25 687.25 687.25
C49 695.25 695.25 695.25 695.25
C50 703.25 703.25 703.25 703.25
C51 711.25 711.25 711.25 711.25
C52 719.25 719.25 719.25 719.25
C53 727.25 727.25 727.25 727.25
C54 735.25 735.25 735.25 735.25
C55 743.25 743.25 743.25 743.25
C56 751.25 751.25751.25 751.25
C57 759.25 759.25 759.25 759.25
C58 767.25 767.25 767.25 767.25
C59 775.25 775.25 775.25 775.25
C60 783.25 783.25 783.25 783.25
C61 791.25 791.25 791.25 791.25
C62 799.25 799.25 799.25 799.25
C63 807.25 807.25 807.25 807.25
C64 815.25 815.25 815.25 815.25
C65 823.25 823.25 823.25 823.25
C66 831.25 831.25 831.25 831.25
C67 839.25 839.25 839.25 839.25
C68 847.25 847.25 847.25 847.25
C69 855.25 855.25 855.25 855.25
C70 863.25 863.25 863.25 863.25
C71 69.25 ---
C72 76.25 ---
C73 83.25 ---
C74 90.25 ---
C75 97.25 ---
C76 59.25 ---
C77 93.25 ---
S01 105.25 104.75 103.25 105.25
S02 112.25 116.75 111.25 112.25
S03 119.25 128.75 119.25 119.25
S04 126.25 140.75 127.25 126.25
S05 133.25 152.75 135.25 133.25
S06 140.25 164.75 143.25 140.25
S07 147.25 176.75 151.25 147.25
S08 154.25 188.75 159.25 154.25
S09 161.25 200.75 167.25 161.25
S10 168.25 212.75 -168.25
S11 231.25 224.75 -231.25
S12 238.25 236.75 -238.25
S13 245.25 248.75 255.25 245.25
S14 252.25 260.75 263.25 252.25
S15 259.25 272.75 271.25 259.25
S16 266.25 284.75 279.25 266.25
S17 273.25 296.75 287.25 273.25

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S18 280.25 136.00 295.25 280.25
S19 287.25 160.00 303.25 287.25
S20 294.25 --294.25
S21 303.25 303.25 -303.25
S22 311.25 311.25 311.25 311.25
S23 319.25 319.25 319.25 319.25
S24 327.25 327.25 327.25 327.25
S25 335.25 335.25 335.25 335.25
S26 343.25 343.25 343.25 343.25
S27 351.25 351.25 351.25 351.25
S28 359.25 359.25 359.25 359.25
S29 367.25 367.25 367.25 367.25
S30 375.25 375.25 375.25 375.25
S31 383.25 383.25 383.25 383.25
S32 391.25 391.25 391.25 391.25
S33 399.25 399.25 399.25 399.25
S34 407.25 407.25 407.25 407.25
S35 415.25 415.25 415.25 415.25
S36 423.25 423.25 423.25 423.25
S37 431.25 431.25 431.25 431.25
S38 439.25 439.25 439.25 439.25
S39 447.25 447.25 447.25 447.25
S40 455.25 455.25 455.25 455.25
S41 463.25 463.25 463.25 463.25

CP-520/520A/520FService Manual
DTV R&D Europe 9
2SAFETY INSTRUCTION
WARNING: Only competent service personnel may carry out work involving the testing or repair
of this equipment.
X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To avoid
such hazards, the high voltage must not exceed the specified limit. The nominal value of the high
voltage of this receiver is 25-26 KV (20”-21”) or 26 KV (25”-28”) at max beam current. The high
voltage must not, under any circumstances, exceed 27.5 KV (20”), 29KV (21”), 29.5 KV (25") or
30 KV (28"). Each time a receiver requires servicing, the high voltage should be checked. It is
important to use an accurate and reliable high voltage meter.
2. The only source of X-RAY Radiation in this TV receiver is the picture tube. For continued
X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as
specified in the parts list.
SAFETY PRECAUTION
Potentials of high voltage are present when this receiver is operating. Operation of the receiver
outside the cabinet or with the back board removed involves a shock hazard from the receiver.
Servicing should not be attempted by anyone who is not thoroughly familiar with the precautions
necessary when working on high voltage equipment.
Discharge the high potential of the picture tube before handling the tube. The picture tube is
highly evacuated and if broken, glass fragments will be violently expelled.
If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement
Parts List.
When replacing a high wattage resistor (metal oxide film resistor) in the circuit board, keep the
resistor 10 mm away from circuit board.
Keep wires away from high voltage or high temperature components.
This receiver must operate under AC 230 volts, 50Hz. NEVER connect to a DC supply or any
other voltage or frequency.
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this equipment have special safety-related
characteristics. These characteristics are often passed unnoticed by a visual inspection and the
X-RAY RADIATION protection afforded by them cannot necessarily be obtained by using
replacement components rated for higher voltage, wattage, etc. Replacement parts which have
these special safety characteristics are identified in this manual and its supplements, electrical
components having such features are identified by designated symbol on the parts list. Before
replacing any of these components, read the parts list in this manual carefully. The use of
substitutes replacement parts which do not have the same safety characteristics as specified in
the parts list may create X-RAY Radiation.

CP-520/520A/520FService Manual
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10
3ALIGNMENT INSTRUCTIONS
3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE
To switch the TV set into service mode please see instruction below.
1 -Select PR. number 91
2 -Adjust sharpness to minimum and exit all menus.
3 –Within 2 seconds press the key sequence : RED -GREEN -menu
The software version is displayed beside the word Service, e.g. “SERVICE VER 00.05”.
To exit SERVICE menu press menu key or Std By key.
3.2 SERVICE MODE NAVIGATION
Pr Up/Down remote keys : cycle through the service items available.
Vol -/+ remote keys : Dec./Increment the values within range –Cycle trough option bits.
OK key : Toggle bits in option byte
Order Item Default setting
1HOR CEN
2RED GAIN
3GRN GAIN
4BLUE GAIN
5RED BIAS
6GRN BIAS
7AGC LEVEL
8G2 –SCREEN
9OPTION1
10 OPTION2
11 AVL
12 PARABOLA
13 HOR WIDTH
14 CORNER T
15 CORNER B
16 HOR. PARAL
17 V. LINEAR
18 V. SLOPE
19 EW TRAPEZ
20 S CORRECT
21 VERT CENT
22 VERT SIZE
3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS
There are two option bytes available (16 bits in all). These option bits are available from Service
mode. First find the OPTION1 or OPTION2 control, and then use the Volume PLUS/MINUS
buttons on the remote control keypad to locate the bits, and OK key to toggle them. The table
below shows the two option bytes available;

CP-520/520A/520FService Manual
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11
3.4 OPTION 1
B7 B6 B5 B4 B3 B2 B1 B0
1TOP Teletext
OFF
FASTEXT
(FLOF)
OFF
TUBE
4:3
VAI bit set
to 1 in
SECAM L
Dolby
Virtual
OFF
SVHS3
disable
0TOP Teletext
ON
FASTEXT
(FLOF) ON TUBE 16:9
VAI bit set
to 0 in
SECAM L
Dolby
Virtual
ON
SVHS3
enable
TUNER OPTIONS
00 = Philips
01 = Not used
10 = Alps
11 = Parstnic (DW)
3.5 OPTION 2
B7 B6 B5 B4 B3 B2 B1 B0
1JVC remote
control
AVL
control
OFF
PICTURE
TILT ON
5 keys
lacal
keyboard
Full
ATSS
Double
Window
Enabled
0
Fixed to
‘0’ Daewoo
Remote
control
AVL
control
ON
PICTURE
TILT OFF
7 keys
lacal
keyboard
Basic
ATSS
Double
Window
Disabled
n.u.
Must
be set
to 1 for
future
compa
tibility
OPTION SETTING BY MODEL
CHASSIS MODEL OPTION
BIT[b7…b0] DW[hex] REMARKS
I0011 1100 3CDTY-28A6/A7/A8
II 0000 1001 09 OPTION1 “b1,b0”- depends on Tuner
I0001 1100 1C
DTY-28W5/80 II 0000 1001 09
OPTION2 “b1”–
From ver. 9.3B
Change to “1”-*1
I0011 1100 3C
CP-520
DTY-21U7 II 0000 1001 09
I0011 1100 3C
CP-520A DTC-20T2
DTC-21Y1/Y2 II 0000 1001 09
I0001 1000 18
DTZ-2881/W8
DTZ-2481 II 0000 1001 09
If Sales Team
Request TILT
function
Change to OP 2 –
“b4”to “1”& *1
I0011 1000 38
CP-520F
DTZ-29U7/B3 II 0000 1001 09

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12
3.6 NVM default setting
The purpose of this message, when you change a virgin EEPROM, is to allow to modify
the NVM DATA to desired values.
1 -Introduction :
The NVM default valus are fixed for the user, but for flexibility in service, these data are stored in
NVM and can be changed when the TV set is in a special mode call "NVM EDITOR". This mode
can only be access from "FACTORY" mode.
2 -Entering into "FACTORY" mode.
To switch the TV set into FACTORY mode, use the factory remote control, and press on “SVC”
key. The factory menu will appear on the screen, showing “FACTORY” , plus other relevant
information like software version and date.
WARNING : When in "FACTORY" mode you should not press any key other than the keys
described in the procedure below. Unwanted key stroke could misadjust the TV set.
3 -Entering into "NVM EDITOR" mode.
To switch the TV set into NVM EDITOR mode, use the user remote control, and press on
“PICTURE/OK” key. The NVM EDITOR window will appear on the screen. This mode allow you
to access all data stored in NVM. The current NVM address is given in column "ADDR." in both
DECimal and HEXadecimal format. The column DATA gives the value contained at selected
address in both DECimal and HEXadecimal format.
4 -Navigation in "NVM EDITOR" mode.
Use Program Up/Dwn keys to select the desired address. Use Volume Up/Dwn keys to change
the data at selected address. You must press "PICTURE/OK" key to store value after
modification.
The data can be adjusted between 0 and 63.
5 -Exit "NVM EDITOR" mode.
To switch the TV set back into FACTORY mode, use the user remote control, and press on
“MENU” key.
The factory menu will appear on the screen, showing “FACTORY”.
6-Exit "FACTORY" mode.
To exit "FACTORY" mode, use the factory remote control, and press on “SVC” key.
The factory menu will disappear from the screen.

CP-520/520A/520FService Manual
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13
NVM DATA CHANGE LIST (hex) CP-520 CP-520F CP-520A
No Register Name Address Default 28A8 2880 21U7 2881 29U7 21Y1 20T2
1OCP_THRESHOLD 0x58F 0x91 <-<-<-<-<-<-<-
2DCXO 0x590 0x4E <-<-<-<-<-<-<-
3AGC_PHILIPS 0x5C1 0xAB <-<-<-<-<-<-<-
4AGC_NC 0x5C2 0xAB <-<-<-<-<-<-<-
5AGC_ALPS 0x5C3 0xB6 <-<-<-<-<-<-<-
6AGC_PARTSNIC 0x5C4 0xB6 <-<-<-<-<-<-<-
7AGC_PHILIPS_START 0x5C5 0x16 <-<-<-<-<-<-<-
8AGC_NC_START 0x5C6 0x16 <-<-<-<-<-<-<-
9AGC_ALPS_START 0x5C7 0x16 <-<-<-<-<-<-<-
10 AGC_PARTSNIC_START 0x5C8 0x16 <-<-<-<-<-<-<-
11 AVLLEV 0x621 0x5 <-<-<-<-<-<-<-
12 Nor1_Bright 0x64A 0x23 <-<-<-<-<-<-<-
13 Nor1_contrast 0x64B 0x2E <-<-<-<-<-<-<-
14 Nor1_Colour 0x64C 0x1C <-<-<-<-<-<-<-
15 Nor1_Sharpness 0x64D 0x23 <-<-<-<-<-<-<-
16 Nor1_Tint 0x64E 0x20 <-<-<-<-<-<-<-
17 Nor1_JVC_Bri 0x64F 0x2D <-<-<-<-<-0x22 <-
18 Nor1_JVC_Cont 0x650 0x2A <-<-<-<-<-0x2E <-
19 Nor1_JVC_Colour 0x651 0x1B <-<-<-<-<-0x20 <-
20 Nor1_JVC_Sharp 0x652 0x23 <-<-<-<-<-<-<-
21 Nor2_Bright 0x653 0x28 0x23 <-<-<-<-0x22 <-
22 Nor2_Contrast 0x654 0x13 0x1A <-<-<-<-<-<-
23 Nor2_Colour 0x655 0x19 0x16 <-<-<-<-<-<-
24 Nor2_Sharpness 0x656 0x1B <-<-<-<-<-<-<-
25 Nor2_Tint 0x657 0x20 <-<-<-<-<-<-<-
26 PresetGainRGB 0x673 0x2A <-<-<-<-<-0x22 <-
27 PresetGainRGB 0x674 0x2A <-<-<-<-<-0x22 <-
28 PresetGainRGB 0x675 0x2A <-<-<-<-<-0x22 <-
29 Cathode_Drive 0x67B 0x1 <-<-<-<-<-<-<-
30 Y_delay_PAL_BG 0x686 0x5 <-<-<-<-<-0x1 <-
31 Y_delay_SECAM_BG 0x687 0x8 <-<-<-<-<-0x6 <-
32 Y_delay_PAL_DK 0x688 0x5 <-<-<-<-<-0x0 <-
33 Y_delay_SCM_DK 0x689 0x5 <-<-<-<-<-0x2 <-
34 Y_delay_PAL_I 0x68A 0x7 <-<-<-<-<-0x1 <-
35 Y_delay_SECAM 0x68B 0x5 <-<-<-<-<-<-<-
36 Y_delay_SECAM-L0x68C 0x8 <-<-<-<-<-0x6 <-
37 Y_delay_AV 0x68D 0xA <-<-<-<-<-0x2 <-
38 G2_Bright 0x68E 0x1A <-<-0x28 0x10 0x1A 0x32 <-
39 G2_Contrast 0x68F 0x42 <-<-0x42 0x42 0x42 0x42 <-

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3.7 TV SET ALIGNMENT
3.7.1 G2 ALIGNMENT
-Tune a colour bar pattern.
-Find the “G2 –SCREEN” item in service mode.
-Adjust screen volume (on FBT) to bring the cursor to central position(Green).
3.7.2 WHITE BALANCE
-Select a dark picture and adjust RED BIAS and GRN BIAS to the desired colour temperature.
-Select a bright picture and adjust RED, GRN and BLUE GAIN to the desired colour temperature.
3.7.3 FOCUS
Adjust the Focus volume (on FBT) to have the best resolution on screen.
3.7.4 VERTICAL GEOMETRY
Adjust V. LINEAR (linearity), S CORRECT (S. Correction), VERT SIZE (Vertical amplitude),
VERT CENT (vertical centring) to compensate for vertical distortion.
3.7.5 HORIZONTAL PICTURE CENTRING
Adjust HOR CEN (Horizontal centre) to have the picture in the centre of the screen.
3.7.6 EAST / WEST CORRECTION
Adjust the PARABOLA, HOR WIDTH, CORNER, HOR PARAL, EW TRAPEZ, to compensate for
geometrical distortion.
HOR PARAL

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HOR WIDTH
adjust for 93% overscan.
PARABOLA
CORNER B & CORNER T
EW TRAPEZ
3.7.7 AGC
-Make sure option bits are correct for the tuner fitted on the chassis (See above how to change
option bits).
-Adjust the antenna signal level at 62 dBµV
-Tune a colour bar pattern.
-Find the “AGC” item in service mode.
-Press the key “OK” on the remote keypad and wait until AGC level stabilise to the optimum
value.
-Alternatively, use “Vol Up/Dwn” keys to adjust manually to the desired Tuner Take Over Point
(TOP).

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4IC DESCRIPTION
4.1 UOC III Series
The UOCIII series combines the functions of a Video Signal Processor (VSP) together with a
FLASH embedded TEXT/Control/Graphics µ-Controller (TCG µ-Controller) and US Closed
Caption decoder. In addition the following functions can be added:
• Adaptive digital (4H/2H) PAL/NTSC combfilter
• Teletext decoder with 10 page text memory
• Multi-standard stereo decoder
• BTSC stereo decoder
• Digital sound processing circuit
• Digital video processing circuit
4.1.1 IC MARKING AND VERSION
Chassis IC marking OSD languages ATSS countries Text
CP-520A
CP-520
CP-520F
BULGARIAN,
CZECH, GERMAN,
DANISH, SPANISH,
FRENCH, FINNISH,
ENGLISH, GREEK,
HUNGARIAN,
ITALIAN,
NORWEGIAN,
DUTCH, POLISH,
ROMANIAN,
RUSSIAN,
SWEDISH,
SLOVAKIAN.
Austria, Belgium,
Switzerland, Czech
Republic, Germany,
Denmark, Spain,
France, Finland, GB,
Greece, Hungary, Italy,
Ireland, Norway,
Netherlands, Portugal,
Poland, Sweden,
Slovak Republic,
Others
PAN-EUROPEAN
LATIN, CYRILLIC,
GREEK.

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4.1.2. BLOCK DIAGRAM

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4.1.3. PINNING
QFP 128pin Symbol Short Description
1P1.5/TX Port 1.5 or UART bus
2P1.4/RX port 1.4 or UART bus
3P1.2/INT2 port 1.2 or external interrupt 2
4VSSC3 Ground
5VDDC3 digital supply to core (1.8V)
6P2.5/PWM4 port 2.5 or PWM4 output
7P2.4/PWM3 port 2.4 or PWM3 output
8VSSC/P digital ground for m-Controller core and periphery
9P3.3/ADC3 port 3.3 or ADC3 input
10 P3.2/ADC2 port 3.2 or ADC2 input
11 DECV1V8 decoupling 1.8 V supply
12 VDDC1 digital supply to core (+1.8 V)
13 P3.1/ADC1 port 3.1 or ADC1 input
14 P3.0/ADC0 port 3.0 or ADC0 input
15 P2.3/PWM2 port 2.3 or PWM2 output
16 P2.2/PWM1 port 2.2 or PWM1 output
17 P2.1/PWM0 port 2.1 or PWM0 output
18 P2.0/TPWM port 2.0 or Tuning PWM output
19 VDDP(3.3V) supply to periphery and on-chip voltage regulator (3.3
V)
20 P1.7/SDA port 1.7 or I2C-bus data line
21 P1.6/SCL port 1.6 or I2C-bus clock line
22 P1.3/T1 port 1.3 or Counter/Timer 1 input
23 P0.0/I2SDI1/O port 0.0 or I2S digital input 1 or I2S digital output
24 P0.1/I2SDO1 port 0.1 or I2S digital output 1
25 P0.2/I2SDO2 port 0.2 or I2S digital output 2
26 P0.3/I2SCLK port 0.3 or I2S clock
27 P0.4/I2SWS port 0.4 or I2S word select
28 VSSC2 Ground
29 VDDC2 digital supply to core (1.8 V)
30 P1.1/T0 port 1.1 or Counter/Timer 0 input
31 P1.0/INT1 port 1.0 or external interrupt 1
32 INT0/P0.5 external interrupt 0 or port 0.5 (4 mA current sinking
capability for direct drive of LEDs)
33 VDDadc(1.8) supply voltage video ADC
34 VSSadc ground for on-chip temperature sensor
35 VDDA2(3.3) supply voltage SDAC (3.3 V)
36 VDDA(1.8) analogue supply for audio ADCs (1.8 V)
37 GNDA Ground
38 VREFAD reference voltage for audio ADCs (3.3/2 V)
39 VREFAD_POS positive reference voltage (3.3 V)
40 VREFAD_NEG negative reference voltage (0 V)
41 VDDA1 analog supply for TCG m-Controller and digital supply for
TV-processor (+3.3 V)
42 BO Blue output

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43 GO Green output
44 RO Red output
45 BLKIN black current input
46 BCLIN beam current limiter input
47 VP3 3rd supply for TV processor
48 GND3 ground 3 for TV-processor
49 B/PBIN3 3rd B input / PB input
50 G/YIN3 3rd G input / Y input
51 R/PRIN3 3rd R input / PR input
52 INSSW3 3rd RGB / YPBPR insertion input
53 VOUT(SWO1) V-output for YUV interface (general purpose switch
output)
54 UOUT(INSSW2) U-output for YUV interface (2nd RGB / YPBPR
insertion input)
55 YOUT Y-output (for YUV interface)
56 YSYNC Y-input for sync separator
57 YIN (G/YIN2/CVBS-Yx) Y-input for YUV interface (2nd G input / Y input or
CVBS/YX input))
58 UIN (B/PBIN2) U-input for YUV interface (2nd B input / PB input)
59 VIN (R/PRIN2/CX) V-input for YUV interface (2nd R input / PR input or CX
input)
60 VDDcomb supply voltage for comb filter (5 V)
61 VSScomb ground connection for comb filter
62 HOUT horizontal output
63 FBISO/CSY flyback input/sandcastle output or composite H/V
timing output
64 SVM scan velocity modulation output
65 CVBSO/PIP CVBS / PIP output
66 AUDOUTHPR audio output for headphone channel (right signal)
67 AUDOUTHPL audio output for headphone channel (left signal)
68 AUDOUTLSR audio output for audio power amplifier (right signal)
69 AUDOUTLSL audio output for audio power amplifier (left signal)
70 C2/C3 chroma-2/3 input
71 CVBS3/Y3 CVBS3/Y3 input
72 AUDIOIN3R audio 3 input (right signal)
73 AUDIOIN3L audio 3 input (left signal)
74 CVBS2/Y2 CVBS2/Y2 input
75 AUDIOIN2R audio 2 input (right signal)
76 AUDIOIN2L audio 2 input (left signal)
77 C4 chroma-4 input
78 CVBS4/Y4 CVBS4/Y4 input
79 AUDIOIN4R audio-4 input (right signal)
80 AUDIOIN4L audio-4 input (left signal)
81 IFVO/SVO/CVBSI (2) IF video output / selected CVBS output / CVBS input
82 VP2 2nd supply voltage TV processor (+5 V)
83 AGC2SIF AGC capacitor second sound IF
84 VCC8V 8 Volt supply for audio switches
85 DVBO/FMRO (2) Digital Video Broadcast output / FM radio output
86 DVBO/IFVO/FMRO (2) Digital Video Broadcast output / IF video output / FM
radio output