Daewoo CP-822F Service Manual



Nov. 2003

TABLE OF CONTENTS

SAFETY INSTRUCTION .................................................................................................................. 2

SPECIFICATIONS ............................................................................................................................ 3

CIRCUIT BLOCK DIAGRAM ........................................................................................................... 4

ALIGNMENT INSTRUCTION ........................................................................................................... 5

SCHEMATIC DIAGRAM .................................................................................................................. 11

EXPLODED VIEW ............................................................................................................................ 12

PRINTED CIRCUIT BOARD ............................................................................................................ 14

SERVICE PARTS LIST .................................................................................................................... 17

APPENDIX (" Appendix is provided only by internet [http://svc.dwe.co.kr] ")

IC DESCRIPTION ............................................................................................................................. 1

IC DC VOLTAGE CHARTS .............................................................................................................. 18

SAFETY INSTRUCTION

WARNING

X-RAY RADIATION PRECAUTION

1. Excessive high voltage can prodece 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 29-31kv at max beam current. The high voltage must not, under any circumstances, exceed 35kv. (33kv :

SAMSUNG CRT)

Each time a receiver require servicing, the high volt-

age should be checked. It is imprortant to use an accurate and reliable high voltage meter.

: Only competent service personnel may carry out work involving the testing or repair of this equipment

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

1. 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.

1) Servicing should not be attempted by anyone who is

not thoroughly familiar with the precautions necessary when working on high-voltage equipment.

2) Dischange 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.

PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in this 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 compo-

2. If any Fuse in this TV receiver is blown, replace it with the FUSE specified in the Replacement Parts List.

3. When replacing a high wattage resistor ( oxide metal film resistor ) in circuit board, keep the resistor 10mm away from circuit board.

4. Keep wires away from high voltage or high temperature components.

5. This receiver must operate under AC230 volts, 50Hz. NEVER connect to DC supply or any other power or frequency.

nents having such features are identified designated symbol on the parts list. Before replacing any of these components, read the parts list in this manual carefully. The use of substitute replacement parts which do not have the same safety characterisitics as specifide in the parts list may create X-RAY Radiation.

SPECIFICATIONS

PIN Signal Designation Matching Value 1 Audio Out (linked with 3)

2 Audio In (linked with 6)

3 Audio Out (linked with 1)

4 Audio Earth 5 Blue Earth 6 Audio in (linked with 2)

7 Blue in

8 Slow (Function) Switching

9 Green Earth 10 NC 11 Green In

12 NC 13 Red Earth 14 Rapid(Blanking) Switching Earth 15 Red In, C In

16 Rapid(Blanking) switching

0.5Vrms, Imp < 1 k (RF 60% MOD)

0.5Vrms, Imp < 10 k

0.5Vrms, Imp < 1 k (RF 60% MOD)

0.5Vrms, Imp < 10 k (RF 60% MOD)

0.7Vpp 2dB, Imp 75

TV : 0-2V, PERI : 9.5 - 12V, Imp > 10 k

0.7Vpp 2dB, Imp 75

Logic 0 : 0 - 0.4V, Logic 1 : 1 - 3V, Imp 75

17 Video Earth 18 Rapid Blanking Earth 19 Video Out

20 Video In, Y In

21 Common Earth

1Vpp 2dB, Imp 75

CIRCUIT BLOCK DIAGRAM

ALIGNMENT INSTRUCTIONS

User Remocon

1. R-22D06

TV................................TXTTV...................................TXT

VOLUME...............VOLUME

DOWN ..................DOWN

(CURSOR LEFT)

MENU.......................MENU

POWER.................POWER

PR ......................... PAGE

NUMBER NUMBER 0-9 0-9

SLEEP...................Not used

Not used................CANCEL

Not used................... HOLD

RECALL...............SUBPAGE

STILL......................REVEAL

Not used ..........................R

Not used ..........................G

PR UP..........................PAGE UP

(CURSOR UP)

VOLUME UP...........VOLUME UP

(CURSOR RIGHT)

PR DOWN..............PAGE DOWN

(CURSOR DOWN)

NORMAL .................... Not used

A V .............................. Not used

TXT ............................. Not used

SOUND ....................... Not used

MODE

MUTE .......................... MUTE

Not used ...................... INDEX

Not used ....................... Size

Zoom ..................Double Window

EFFECT ....................... Not used

Not used ...................... C

Not used ....................... Y

R-22D06

ALIGNMENT INSTRUCTIONS

YESY

IC MASTER MEMORY CONDITION TABLE FOR CP-822F CHASSIS

CONTROL MODEL BASIC W/VIRTUAL DOLBY

V. Slope -015 (const.) -015 (const.)

V. Center 955 955

V.Size 68 68

S.Curve 027 (const.) 027 (const.)

H.Center -333 -333

H.Width 40 40

EW.Para -040 -040

EW.Cor Top 012 012

EW.Cor Low 008 008

EW. Sym -006 -006

R Bias 330 (const.) 330 (const.) G Bias 330 330 B Bias 370 370

R Drive 400 (const.) 400 (const.)

G Drive 370 370

B Drive 370 370

G2 Adjust 000 000

Sub Brigh Double TEX Wide Option

* Tuner Is DWE (opt.) DWE (opt.)

Flat Option YES YES

Svm SVG 003 (const.) 003 (const.) Svm SVD 004 (const.) 004 (const.)

Svm SVDEL 012 (const.) 012 (const.)

Svm SVCOR 009 (const.) 009 (const.)

Bcl Thres 580 (const.) 580 (const.)

Bcl Tc 250 (const.) 250 (const.)

Bcl Gain 511 (const.) 511 (const.)

Nor1 Bright 038 038

Nor1 Cont 058 058

Nor1 Color 042 042

Nor1 Sharp 032 032

Nor1 Tint 032 032

Nor2 Bright 038 038

Nor2 Cont 038 038

Nor2 Color 038 038

Normal 2

Nor2 Sharp 032 032

Nor2 Tint 032 032

006 006

-514 (can't see) -514 (can't see) ES

Sound

OSDOpt2. W/BOpt1.BCLNormal 1 DeflectionSVM

Dolby 3411 N0 YES

OSD Contrast 400 (const.) 400 (const.)

OSD Bright 000 (const.) 000 (const.)

Text Gain YES YES

Tilt Option YES YES

Transparent NO NO

Vertical Angle -769 (const.) -769 (const.)

Vertical Bow -769 (const.) -769 (const.)

* Tuner is

DW DAEWOO/PARTSNIC/SAMSUNG PHI PHILIPS

SIE SIEL

ALIGNMENT INSTRUCTIONS

AFT Standard B/G, D/K, I and L

1) Set a Signal Generator with

- RF FREQUENCY = 38.9 MHz,

- RF OUTPUT LEVEL = 80 5dBuV

- Pattern = Color Bar

- System = PAL-B/G

2) Connect the Signal Generator RF Output to TP2 (Tuner IF Output).

There must be no signal input to the tuner.

3) Set the L103 to TP1(I101, #22) with DC Voltage to 2.5V 0.1V

RF AGC

1) Set a TV Signal Generator(e.g. PM5418)with

- RF FREQUENCY : 503.25 MHz, CH 25

- RF OUTPUT LEVEL : 1 60 dBuV(TECC2949PG35W:Samsung/DT5-BF18D:Partsnic) 2 60 dBuV(UV1316/A:Philips/EL2782/105-B-Siel)

- Pattern = Color Bar(or Philips patten)

2) Connect the Signal Generator RF output to Tuner input terminal. Connect a Oscilloscope probe(or Digital Multi-meter) to P101(Tuner AGC input).

3) Set the voltage level to 1 3.0V 0.1Vdc, 2 2.5V 0.1Vdc by adjusting the RB02 (Variable Resistor).

SCREEN (G2)

1) Set a Pattern Generator with - RF Frequency : 210.25MHz (10CH)

- Pattern : RETMA

2) Select the “G2” in Menu

3) And a Horizontal Line will appear on the screen.

4) Adjust the SCREEN VOLUME on FBT barely to see the Horizontal Line.

5) Press the PR UP/DOWN keys to finish the SCREEN adjustment.

FOCUS

1) Apply a RETMA PATTERN signal.

2) Adjust the FOCUS VOLUME on FBT to obtain optimal resolution.

GEOMETRY

1. VERTICAL SLOPE ( Fixed : Adjust if need be )

1) Apply a RETMA PATTERN Signal.

2) Set the TV to Normal I mode.

3) Adjust the higher semicircle and the lower semicircle to be the same, with the V.Slope

by volume Up/Down keys.

2. VERTICAL CENTER

1) Apply a RETMA PATTERN Signal.

2) Set the TV to Normal I mode.

3) Adjust the center of the picture with the V.Center by volume Up/Down keys.

3. VERTICAL SIZE

* The VERTICAL CENTER adjustment has to be done in advance.

1) Apply a RETMA PATTERN Signal.

2) Set the TV to Normal I mode.

3) Adjust the VERTICAL SIZE of the picture with the select V.size by

volume UP/DOWN keys.

4. VERTICAL S-CORRECTION ( Fixed : Adjust if need be )

1) Apply a CROSSHATCH PATTERN Signal.

2) Adjust the S-CORRECTION to obtain the same distance between

horizontal lines with the S.Curve by volume UP/DOWN keys.

5. HORIZONTAL CENTER

1) Apply a RETMA PATTERN Signal.

2) Adjust picture centering with the select H.Center by volume UP/DOWN keys.

ALIGNMENT INSTRUCTIONS

1. WIDTH

1) Apply a RETMA PATTERN Signal.

2) Adjust the horizontal width to make a perfect circle with the select H.Width

by volume UP/DOWN keys.

2. PARA

1) Apply a CROSSHATCH PATTERN Signal.

2) Adjust the vertical line to straight with the select E.W Para by volume

UP/DOWN keys.

3. CORNER ( Fixed : Adjust if need be )

1) Apply a CROSSHATCH PATTERN Signal.

2) Adjust the vertical line to straight with the select EW.Cor T by volume

UP/DOWN keys.

4. SYMMETRY ( Fixed : Adjust if need be )

1) Apply a CROSSHATCH PATTERN Signal.

2) Adjust the symmetrical balance to be suitable with the select EW Sym by

volume UP/DOWN keys.

ALIGNMENT INSTRUCTIONS

WHITE BALANCE

1. RGB Reference R

2. Beam Reference LOW ( 288, 301 : 10Cd/ ) HIGH ( 288, 301 : 100Cd/ )

3. Adjust G, B Gain with select Menu G,B of BIAS, DRIVE of select Menu so that R, G, B Bars are on the center position of the analog meter. If R Analog meter is not on center, control the Brightness +/- of user Remocon so as R Analog meter to be on the center position.

SUB BRIGHT

1. Pattern : Retma

2. Adjust the SUB BRIGHT with the select Sub Bri by volume UP/DOWN keys. so that only H-Center parts of picture can be seen.

DOUBLE TEXT CENTER

1. Pattern : Pattern RED

2. Select Menu

3. Select DT in SVC menu time to see the Double Text Picture. ( Left : RF Picture, Right : Text Picture )

4. Change the Double Text control keys volume UP/DOWN keys so that the left edge of text picture concur with the right edge of RF picture.

WIDE MODE

1. Locate the cursor on ‘ Wide’ in SVC Menu.

2. ‘ Yes’ changes the display to 16:9 mode.

3. ‘ No’ change the display to 4:3 mode.

TUNER SELECTION

1. DWE : Partsnic Tuner or Samsung Tuner

2. PHI : Philips Tuner

3. SIE : Siel Tuner

FLAT MODE

1. Locate the cursor on ‘ FLAT’ in SVC Menu.

2. ‘ Yes’ changes the display to FLAT CRT mode.

3. ‘ No’ change the display to Normal CRT mode.

ALIGNMENT INSTRUCTIONS

SVM (Scan Velocity Modulation)

1. SVM SVG : SVM Gain

2. SVM SVD : SVM Differentiator delay (0 = filter off)

3. SVM SVDEL : Delay of SVMOUT in steps of 12.5nS

2. SVM SVCOR : SVM coring value

BCL (Beam Current Limit)

1. BCL Thres : BCL threshold current

2. BCL TC : BCL time constant

3. BCL Gain : BCL loop Gain

SCHEMATIC DIAGRAM

DTA-3220ZZ/DTA-3220ZL

EXPLODED VIEW

DTA-32W9ZZ/DTA-3220ZL

EXPLODED VIEW

PRINTED CIRCUIT BOARD

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