Daewoo DUB-2850GB, DUB-2842GB User manual

Service Manual
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 PPL(Parts Price List in
Service Information Center.
S/M No.TCP780FEF0
CHASSIS : CP-780
MODEL : DUB-2850GB
DUB-2850
DUB-2850K
NOV. 2005

CP-780 Service Manual
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CONTENTS
1 MAIN FEATURES 3
1.1 SPECIFICATIONS 3
1.2 CHANNEL/FREQUENCY TABLE 5
2 SAFETY INSTRUCTION 7
3 ALIGNMENT INSTRUCTIONS 8
3.1 MICROCONTROLLER CONFIGURATION : SERVICE MODE 8
3.2 SERVICE MODE NAVIGATION 8
3.3 MICROCONTROLLER CONFIGURATION : OPTION BITS 8
3.4 OPTION 1 9
3.5 OPTION 2 9
3.6 NVM default setting 10
3.7 TV SET ALIGNMENT 12
3.8 OAD(Over air download) 13
4 IC DESCRIPTION 14
4.1 UOC III Series 14
4.2 TDA8946J (STEREO AUDIO AMPLIFIER) 24
4.3 TDA8358J (VERTICAL AMPLIFIER) 26
4.4 TDA6108AJF (VIDEO AMPLIFIER) 28
4.5 2WC16-16KB (EEPROM) 29
4.6 STR-W6754 30
4.7 Pnx 8314 32
4.8 UDA 1334 BTS (audio DAC) 34
4.9 CI MAX 35
4.10 M29W320ET(Flash Memory) 38
4.11 K4S281632D(SDRAM) 39
5 CIRCUIT DESCRIPTION 40
5.1 BLOCK DIAGRAM 40
5.2 FUNCTIONAL DESCRIPTION OF VIDEO PROCESSOR 41
5.3 GENERAL DESCRIPTION OF THE TV SOUND OF SOUND PROCESSOR 49
5.4 FUNCTIONAL DESCRIPTION PROCESSOR 51
6 SERVICE PARTS LIST 56
7 SCHEMATIC DIAGRAM 65
8 PRINTED CIRCUIT BOARD 70
9 EXPLODED VIEW 78

CP-780 Service Manual
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DOCUMENT HISTORY
VERSION DATE COMMENTS
V1.00 22/10/05 Creation of document (Author BD MIN) for project CP-780 50Hz iDTV.
1 MAIN FEATURES
1.1 SPECIFICATIONS
1.1.1 GENERAL
TV standard PAL - SECAM B/G D/K, PAL I/I, SECAM L/L’
Colour system Tuner PAL, SECAM
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 95W
consumption
Sound Output Power 7W x 2 (at 60% mod, 10%THD)
Speaker 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 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-SCAR
SPDIF : jack on rear of cabinet(Digital channel output)
T 2 : Audio / Video In and Out, SVHS In.
AV3 : Audio-Video Jack on side of cabinet.
SVHS3 (option) : Jack on side of cabinet sound
Headphone jack on side of cabinet
input common with AV3.
Remote Control R-52N20
PCMCIA CI slot (on rear of cabinet)
1.1.2 EURO-SCART 1 (21 Pin)
Pin Signal Description Matching value
1 Audio Output Right 0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )
2 Audio Input Right 0.5 Vrms, Impedance > 10 k
3 Audio Output Left 0.5 Vrms, Impedance < 1 k , ( RF 54% Mod )
4 Audio Earth
5 Blue Earth
6 Audio Input Left 0.5 Vrms, Impedance > 10 k
7 Blue Input 0.7 Vpp
8 Slow Switching TV : 0 to 2V, AV 16/9:4.5 to 7V, AV 4/3 : 9.5 to 12V, Impedance > 10 k
0.1V, Impedance 75
DVB standard COFDM MPEG2 MPEG Audio
Transmission
standard Picture compression standard Voice compression standard

CP-780 Service Manual
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1.1.3 EURO-SCART 2 (21Pin)

CP-780 Service Manual
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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 4 79.25 479.25
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 5 11.25 511.25
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
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 751.25 751.25 751.25 751.25
C57 759.25 759.25 759.25 759.25
C58 767.25 767.25 767.25 767.25
1.2 CHANNEL/FREQUENCY TABLE

CP-780 Service Manual
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CHANNEL EUROPE CCIR FRANCE GB(IRELAND) EAST OIRT
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
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

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CP-780 Service Manual
2 SAFETY 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 28-30 KV at max beam current. The high voltage must not,
under any circumstances, exceed 33 KV. 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 220 - 240 volts, 50 Hz. 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.

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CP-780 Service Manual
3 ALIGNMENT 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 V0.22”.
To exit SERVICE menu press menu key or Stand 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
1 HOR CEN 39
2 RED GAIN 32
3 GRN GAIN 32
4 BLUE GAIN 32
5 RED BIAS 32
6 GRN BIAS 32
7 AGC LEVEL NO ADJUSTMENT
8 G2-SCREEN -
9 OPTION1 0001 1001
10 OPTION2 0010 1111
11 AVL -
12 PARABOLA 20
13 HOR WIDTH 50
14 CORNER T 39
15 CORNER B 39
16 HOR. PARAL 25
17 V.LINEAR -
18 V.SLOPE 36
19 EW TRAPEZ 25
20 S CORRECT 22
21 VERT CENT 43
22 VERT SIZE 24
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/OPTION2/OPTION3 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;

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CP-780 Service Manual
3.4OPTION1
B7 B6 B5 B4 B3 B2 B1 B0
1
0
TOP
Teletext
OFF
FASTEXT
(FLOF)
OFF TUBE
4:3 Dolby
Virtual
OFF
VAI bit set
to 1 in
SECAM L TUNER OPTIONS
00=PHILIPS
01=Not used
10=Alps
11=Parstnic(DW)
TOP
Teletext
ON
FASTEXT
(FLOF)
ON TUBE
16:9 Dolby
Virtual
ON SVHS3
enabled
VAI bit set
to 0 in
SECAM L
3.5 OPTION2
B7 B6 B5 B4 B3 B2 B1 B0
1
0
Fixed to
‘0’ Fixed to ‘0’
Nu Must
be Set to
1 for
Future
compati
bility
5 keys
Iacal
keyboard
7 keys
Iacal
keyboard
Fixed to ‘0’
n.u.
Must be set
to 1 for
future
compatibility
- OPTION SETTING BY MODEL
SVHS3
disabled
Full
ATSS
Basic
ATSS
PAT&
TAT
Enabled
PAT&
TAT
Disabled
CHASSIS MODEL OPTION DW[hex] REMARKS
BIT[b7...b0]
CP-780 DUB-2850GB I 0001 1001 19 OPTION “b1,b0” -
II 0010 1111 2F Depends on Tuner

CP-780 Service Manual
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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 values 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/Down keys to select the desired address. Use Volume Up/Down 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-780 Service Manual
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NVM DATA CHANGE LIST
(hex) CP-780
No Register Name Address Default DUB-2850GB
1 OCP_THRESHOLD 0x58F 0x91 <-
2 DCXO 0x590 0x4E <-
3 AGC_PHILIPS 0x5C1 0xAB <-
4 AGC_NC 0x5C2 0xAB 0x04
5 AGC_ALPS 0x5C3 0xB6 <-
6 AGC_PARTSNIC 0x5C4 0xB6 <-
7 AGC_PHILIPS_START 0x5C5 0x16 <-
8 AGC_NC_START 0x5C6 0x16 0x00
9 AGC_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 <-
18 Nor1_JVC_Cont 0x650 0x2A <-
19 Nor1_JVC_Colour 0x651 0x1B <-
20 Nor1_JVC_Sharp 0x652 0x23 <-
21 Nor2_Bright 0x653 0x28 <-
22 Nor2_Contrast 0x654 0x13 <-
23 Nor2_Colour 0x655 0x19 <-
24 Nor2_Sharpness 0x656 0x1B <-
25 Nor2_Tint 0x657 0x20 <-
26 PresetGainRGB 0x673 0x2A <-
27 PresetGainRGB 0x674 0x2A <-
28 PresetGainRGB 0x675 0x2A <-
29 Cathode_Drive 0x67B 0x1 <-
30 Y_delay_PAL_BG 0x686 0x5 <-
31 Y_delay_SECAM_BG 0x687 0x8 <-
32 Y_delay_PAL_DK 0x688 0x5 <-
33 Y_delay_SCM_DK 0x689 0x5 <-
34 Y_delay_PAL_I 0x68A 0x7 <-
35 Y_delay_SECAM 0x68B 0x5 <-
36 Y_delay_SECAM-L 0x68C 0x8 <-
37 Y_delay_AV 0x68D 0xA <-
38 G2_Bright 0x68E 0x1A 3D
39 G2_Contrast 0x68F 0x42 77

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CP-780 Service Manual
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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CP-780 Service Manual
3.8 OAD (Over Air Download)
3.8.1 Concept of OAD
OAD is the function for updating software of IDTV(Integrated Digital TV) or DSTB (Digital Set-Top
Box) from outer source.
3.8.2 Object of OAD
Sometimes IDTV or DSTB may need a newer software for technical or system problems after sale,
so through OAD function, IDTV or DSTB may be updated automatically at each user’s home.
3.8.3 OAD on CP-780
CP-780 performs OAD automatically when being on ST-BY mode. But CP-780 can’t supply power
to digital part to search s/w on ST-BY mode. To solve this, CP-780 is worked as below.
a. power off by remote control on Analog mode : go directly to ST-BY mode. In this case, power
consumption : 1.5w / AC 230V.
b. power off by remote control on Digital mode
- go to video mute (raster off) and stay about 3~5 minute to search S/W. In this case, power
Consumption is 52W / AC 230V
- After finishing searching s/w, TV set go to ST-BY mode. (1.5W / AC 230V) If turn off TV before
TV complete searching s/w, TV set will perform it again.
- If TV set find a new s/w to update, a update message will be shown on the screen when the
user turn on TV.
- CP-780 performs this process once a day.
- If the user doesn’t want OAD search, the user can press R/C button for 2~3 sec to go directly to
ST-BY mode.
3.8.4 Algorithm of OAD
Digital stream has a date/time information. CP-780 stores a date info at NVM. UOC brings date
info from digital stream and compares it with NVM data. If those two are different from each other,
TV set performs OAD and store a date info at NVM.If those two are the same, go directly to ST-BY
mode. Through this algorithm, CP-780 perform OAD search once a day.
HOR WIDTH
adjust for 93% overscan. PARABOLA
CORNER B & CORNER T EW TRAPEZ

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4.1.1 IC MARKING AND VERSION
Chassis IC marking OSD languages ATSS countries Text
CP-780 ENGLISH, WELSH Australia,, Belgium,
GEALIC Switzerland, Czech
Republic, Germany,
Denmark, Spain, PAN-EUROPEAN
France, Finland, GB, LATIN, CYRILLIC,
Greece, Hungary, Italy, GREEK.
Ireland, Norway,
Netherlands, Portugal,
Poland, Sweden,
Slovak Republic,
Others
CP-780 Service Manual
4 IC DESCRIPTION
4.1 UOC/// Series
The UOC series combines the functions of a Video Signal Processor(VSP) together with a FLASH embedded
TEXT/Control/Graphics m-Controller(TCG m-Controller) and US Closed Caption decoder. In addition the following
functions can be added:
- Adaptive digital(4H/2H) PAL/NTSC combfilter
- Teletext decoder with 10page text memory
- Multi- standard stereo decoder
- BTSC stereo decoder
- Digital sound processing circuit
- Digital video processing circutt

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CP-780 Service Manual
4.1.2 BLOCK DIAGRAM

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CP-780 Service Manual
4.1.3. PINNING
QFP 128pin Symbol Short Description
1 VSSP2 Ground
2 VSSC4 Ground
3 VDDC4 digital supply to SDACs (1.8V)
4 VDDA3(3.3V) supply (3.3 V)
5 VREF_POS_LSL positive reference voltage SDAC (3.3 V)
6 VREF_NEG_LSL+HPL negative reference voltage SDAC (0 V)
7 VREF_POS_LSR+HPR positive reference voltage SDAC (3.3 V)
8 VREF_NEG_HPL+HPR negative reference voltage SDAC (0 V)
9 VREF_POS_HPR positive reference voltage SDAC (3.3 V)
10 XTALIN crystal oscillator input
11 XTALOUT crystal oscillator output
12 VSSA1 Ground
13 VGUARD/SWIO V-guard input / I/O switch (e.g. 4 mA current
sinking capability for direct drive of LEDs)
14 DECDIG decoupling digital supply
15 VP1 1st supply voltage TV-processor (+5 V)
16 PH2LF phase-2 filter
17 PH1LF phase-1 filter
18 GND1 ground 1 for TV-processor
19 SECPLL SECAM PLL decoupling
20 DECBG bandgap decoupling
21 EWD/AVL (1) East-West drive output or AVL capacitor
22 VDRB vertical drive B output
23 VDRA vertical drive A output
24 VIFIN1 IF input 1
25 VIFIN2 IF input 2
26 VSC vertical sawtooth capacitor
27 IREF reference current input
28 GNDIF ground connection for IF amplifier
29 SIFIN1/DVBIN1 (2) SIF input 1 / DVB input 1
30 SIFIN2/DVBIN2 (2) SIF input 2 / DVB input 2
31 AGCOUT tuner AGC output
32 EHTO EHT/overvoltage protection input
33
AVL/SWO/SSIF/ REFO/REFIN (2)
Automatic Volume Levelling / switch
output / sound IF input / subcarrier
reference output / external reference
signal input for I signal mixer for DVB
operation
34 AUDIOIN5L audio-5 input (left signal)
35 AUDIOIN5R audio-5 input (right signal)
36 AUDOUTSL audio output for SCART/CINCH (left
signal)
37 AUDOUTSR audio output for SCART/CINCH (right
signal)
38 DECSDEM decoupling sound demodulator

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CP-780 Service Manual
QFP 128pin Symbol Short Description
39 QSSO/AMOUT/AUDEEM (2) QSS intercarrier output / AM output /
deemphasis (front-end audio out)
40 GND2 ground 2 for TV processor
41 PLLIF IF-PLL loop filter
42 SIFAGC/DVBAGC (2) AGC sound IF / internal-external AGC for
DVB applications
43 DVBO/IFVO/FMRO (2) Digital Video Broadcast output / IF video
output / FM radio output
44 DVBO/FMRO (2) Digital Video Broadcast output / FM radio
output
45 VCC8V 8 Volt supply for audio switches
46 AGC2SIF AGC capacitor second sound IF
47 VP2 2nd supply voltage TV processor (+5 V)
48 IFVO/SVO/CVBSI (2) IF video output / selected CVBS output /
CVBS input
49 AUDIOIN4L audio-4 input (left signal)
50 AUDIOIN4R audio-4 input (right signal)
51 CVBS4/Y4 CVBS4/Y4 input
52 C4 chroma-4 input
53 AUDIOIN2L audio 2 input (left signal)
54 AUDIOIN2R audio 2 input (right signal)
55 CVBS2/Y2 CVBS2/Y2 input
56 AUDIOIN3L audio 3 input (left signal)
57 AUDIOIN3R audio 3 input (right signal)
58 CVBS3/Y3 CVBS3/Y3 input
59 C2/C3 chroma-2/3 input
60 AUDOUTLSL audio output for audio power amplifier
(left signal)
61 AUDOUTLSR audio output for audio power amplifier
(right signal)
62 AUDOUTHPL audio output for headphone channel (left
signal)
63 AUDOUTHPR audio output for headphone channel (right
signal)
64 CVBSO/PIP CVBS / PIP output
65 SVM scan velocity modulation output
66 FBISO/CSY flyback input/sandcastle output or
composite H/V timing output
67 HOUT horizontal output
68 VSScomb ground connection for comb filter
69 VDDcomb supply voltage for comb filter (5 V)
70 VIN (R/PRIN2/CX) V-input for YUV interface (2nd R input /
PR input or CX input)
71 UIN (B/PBIN2) U-input for YUV interface (2nd B input /
PB input)
72 YIN (G/YIN2/CVBS-Yx) Y-input for YUV interface (2nd G input / Y
input or CVBS/YX input))

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QFP 128pin Symbol Short Description
73 YSYNC Y-input for sync separator
74 YOUT Y-output (for YUV interface)
75 UOUT(INSSW2) U-output for YUV interface (2nd RGB /
YPBPR insertion input)
76 VOUT(SWO1) V-output for YUV interface (general
purpose switch output)
77 INSSW3 3rd RGB / YPBPR insertion input
78 R/PRIN3 3rd R input / PR input
79 G/YIN3 3rd G input / Y input
80 B/PBIN3 3rd B input / PB input
81 GND3 ground 3 for TV-processor
82 VP3 3rd supply for TV processor
83 BCLIN beam current limiter input
84 BLKIN black current input
85 RO Red output
86 GO Green output
87 BO Blue output
88 VDDA1 analog supply for TCG m-Controller and
digital supply for TV-processor (+3.3 V)
89 VREFAD_NEG negative reference voltage (0 V)
90 VREFAD_POS positive reference voltage (3.3 V)
91 VREFAD reference voltage for audio ADCs (3.3/2 V)
92 GNDA Ground
93 VDDA(1.8) analogue supply for audio ADCs (1.8 V)
94 VDDA2(3.3) supply voltage SDAC (3.3 V)
95 VSSadc ground for on-chip temperature sensor
96 VDDadc(1.8) supply voltage video ADC
97 INT0/P0.5 external interrupt 0 or port 0.5 (4 mA current sinking
capability for direct drive of LEDs)
98 P1.0/INT1 port 1.0 or external interrupt 1
99 P1.1/T0 port 1.1 or Counter/Timer 0 input
100 VDDC2 digital supply to core (1.8 V)
101 VSSC2 Ground
102 P0.4/I2SWS port 0.4 or I2S word select
103 P0.3/I2SCLK port 0.3 or I2S clock
104 P0.2/I2SDO2 port 0.2 or I2S digital output 2
105 P0.1/I2SDO1 port 0.1 or I2S digital output 1
106 P0.0/I2SDI1/O
port 0.0 or I2S digital input 1 or I2S digital output
107 P1.3/T1 port 1.3 or Counter/Timer 1 input
108 P1.6/SCL port 1.6 or I2C-bus clock line
109 P1.7/SDA port 1.7 or I2C-bus data line
110 VDDP(3.3V) supply to periphery and on-chip voltage regulator (3.3 V)
111 P2.0/TPWM port 2.0 or Tuning PWM output
112 P2.1/PWM0 port 2.1 or PWM0 output
113 P2.2/PWM1 port 2.2 or PWM1 output
114 P2.3/PWM2 port 2.3 or PWM2 output

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QFP 128pin Symbol Short Description
115 P3.0/ADC0 port 3.0 or ADC0 input
116 P3.1/ADC1 port 3.1 or ADC1 input
117 VDDC1 digital supply to core (+1.8 V)
118 DECV1V8 decoupling 1.8 V supply
119 P3.2/ADC2 port 3.2 or ADC2 input
120 P3.3/ADC3 port 3.3 or ADC3 input
121 VSSC/P digital ground for m-Controller core and periphery
122 P2.4/PWM3 port 2.4 or PWM3 output
123 P2.5/PWM4 port 2.5 or PWM4 output
124 VDDC3 digital supply to core (1.8V)
125 VSSC3 Ground
126 P1.2/INT2 port 1.2 or external interrupt 2
127 P1.4/RX port 1.4 or UART bus
128 P1.5/TX Port 1.5 or UART bus
4.1.4 FEATURES
Analogue Video Processing (all versions)
Multi-standard vision IF circuit with alignment-free PLL demodulator
Internal (switchable) time-constant for the IF-AGC circuit
Switchable group delay correction and sound trap (with switchable centre frequency) for the
demodulated CVBS signal
DVB/VSB IF circuit for preprocessing of digital TV signals.
Video switch with 3 external CVBS inputs and a CVBS output. All CVBS inputs can be used
as Y-input for Y/C signals. However, only 2 Y/C sources can be selected because the circuit
has 2 chroma inputs. It is possible to add an additional CVBS(Y)/C input (CVBS/YX and CX)
when the YUV interface and the RGB/YPRPB input are not needed.
Automatic Y/C signal detector
Adaptive digital (4H/2H) PAL/NTSC comb filter for optimum separation of the luminance and
the chrominance signal.
Integrated luminance delay line with adjustable delay time
Picture improvement features with peaking (with switchable centre frequency, depeaking,
variable positive/negative peak ratio, variable pre-/overshoot ratio and video dependent
coring), dynamic skin tone control, gamma control and blue- and black stretching. All
features are available for CVBS, Y/C and RGB/YPBPR signals.
Switchable DC transfer ratio for the luminance signal
Only one reference (24.576 MHz) crystal required for the TCG m-Controller, digital sound
processor, Teletext and the colour decoder
Multi-standard colour decoder with automatic search system and various forced mode
possibilities
Internal base-band delay line
Indication of the Signal-to-Noise ratio of the incoming CVBS signal
Linear RGB/YPBPR input with fast insertion.
YUV interface. When this feature is not required some pins can be used as additional RGB/YPBPR
input. It is also possible to use these pins for additional CVBS (or Y/C) input (CVBS/YX and CX).

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Tint control for external RGB/YPBPR signals
Scan Velocity Modulation output. The SVM circuit is active for all the incoming CVBS, Y/C
and RGB/YPBPR signals. The SVM function can also be used during the display of teletext
pages.
RGB control circuit with Continuous Cathode Calibration , white point and black level off-
set adjustment so that the colour temperature of the dark and the light parts of the screen
can be chosen independently.
Contrast reduction possibility during mixed-mode of OSD and Text signals
Adjustable wide blanking of the RGB outputs
Horizontal synchronization with two control loops and alignment-free horizontal oscillator
Vertical count-down circuit
Vertical driver optimized for DC-coupled vertical output stages
Horizontal and vertical geometry processing with horizontal parallelogram and bow
correction and horizontal and vertical zoom
Low-power start-up of the horizontal drive circuit
Analogue video processing (stereo versions)
The low-pass filtered mixed down I signal is available via a single ended or balanced
output stage.
Analogue video processing (mono versions)
The low-pass filtered mixed down I signal is available via a single ended output stage
Digital Video Processing (some versions)
Double Window mode applications. It is possible to display a video and a text window or 2
text windows in parallel.
Linear and non-linear horizontal scaling of the video signal to be displayed.
Sound Demodulation (all versions)
Separate SIF (Sound IF) input for single reference QSS (Quasi Split Sound) demodulation.
AM demodulator without extra reference circuit
The mono intercarrier sound circuit has a selective FM-PLL demodulator which can be
switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this
system is such that the external band-pass filters can be omitted. In the stereo versions of
UOCIII the use of this demodulator is optional for special applications. Normally the FM
demodulators of the stereo demodulator/decoder part are used (see below).
The FM-PLL demodulator can be set to centre frequencies of 4.72/5.74 MHz so that a
second sound channel can be demodulated. In such an application it is necessary that an
external bandpass filter is inserted.
The vision IF and mono intercarrier sound circuit can be used for the demodulation of FM
radio signals. With an external FM tuner also signals with an IF frequency of 10.7 MHz can
be demodulated.
Switch to select between 2nd SIF from QSS demodulation or external FM (SSIF)
Audio Interfaces and switching (stereo versions with Audio DSP)
Audio switch circuit with 4 stereo inputs, a stereo output for SCART/CINCH, 1 stereo output
for HEADPHONE. The headphone channel has an analogue volume control circuit for the L
and R channel. Finally 1 stereo SPEAKER output with digital controls.
AVL (Automatic Volume Levelling) circuit for the headphone channel.
Digital input crossbar switch for all digital signal sources and destinations