CP-325.pdf part of Daewoo CP-325 CP-325.pdf, Daewoo Ņhassis CP CP-325 CP-325.pdf text manual preview

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GOODMANS 1418 R 1
General Information MAIN B + (+103V) ADJUSTMENT
1. Receive RETMA pattern signal.
VCO/AFT ADJUSTMENT
Waveforms
2. Set the picture level to NORMAL mode. 1. APPARATUS CONNECTION &
3. Connect DC voltage meter to the TP7 and PRESETTING CONNECTION
Also Covers adjust VR801 for +103V DC. 1. Connect H-out of LSW-480 to X-axis of the
DTC-14B1 VUP oscilloscope and V-out of LSW-480 to Y-axis
of the oscilloscope.
Daewoo CP-325 2. Connect the sweep signal output to TP1.
3. Set ATTENUATOR of LSW-480 to 30dB.
4. Supply 16.5V D.C. voltage (B+) to TP4.
5. Supply 4-5V D.C. voltage to TP5:VCO.
6. Supply 7-8V D.C. voltage to TP5:AFT.
Matrix
Item PRESET
1) Oscilloscope Scaling
CRT Purity Adjustments - See Note
D.C level.
b) Set the horizontal time display to X-Y c) Put
the horizontal axis (X) to 1V/div. and the
vertical axis (Y) to 2V/div.
X-Ray Precautions 2) LSW-480 MARKER FREQ. SETTING.
X-RAY RADIATION PRECAUTION 3. Rotate the SUB-BRIGHTNESS VR (VR513)
1 Excessive high voltage can produce poten- gradually CCW until the last beam disappears Fig. 1 Fig. 2 fp(n+1) fs fc fp-2 fp fs(n-1)
tially hazardous X-RAY RADIATION. To avoid on the screen. B/G 31.9 33.4 34.5 36.9 38.9 40.4
such hazards, the high voltage must not Fig. 1 P-I 31.9 33.5 35.07 37.5 39.5 41
exceed the specified limit. The nominal value COLOUR AMPLITUDE AND PHASE Centre Convergence by Convergence Magnets
of the high voltage of this receiver is 25.5kv ADJUSTMENT
(14": 23.5kv) at max beam current. The high Fig. 2
voltage must not, under any circumstances, 1. Receive a PAL/DEM Signal (Philips Model Circumference Convergence by DEF. Yoke
exceed 27.5kv (14": 25.0kv). Each time a PM5518)
receiver requires servicing, the high voltage 2. Connect the probe of an oscilloscope to R203
should be checked following the HIGH (TP6:B-Y output)
VOLTAGE CHECK procedure. It is recom- 3. Adjust L510 and VR516 in order to make the
mended the reading of the high voltage be waveform fine on the screen like Fig. 1.
recorded as a part of the service records. It is
important to use an accurate and reliable high
voltage metre.
2. The only source of X-RAY RADIATION in this
TV receiver is the picture tube. For continued Connection for PIF Adjustments
X-RAY RADIATION protection, the replace- Fig. 3 Adjustment of magnets
ment tube must be exactly the same type tube II. ADJUSTMENT OF VCO (B/G, I)
as specified in the parts list. 1. Connect the test point of LSW-480 to TP2.
2. Adjust L109 (ACO COIL) so that the P marker
Adjustments Fig. 1 point is located on the reference level.
SCREEN & WHITE BALANCE ADJUSTMENT VERTICAL HEIGHT ADJUSTMENT Ill. ADJUSTMENT OF AFT B/G, I)
1.This adjustment is to be made only after 1. Receive RETMA pattern signal 1. Connet the test point of LSW-480 to TP3
warming up at least 15 minutes. 2. Set the BRIGHTNESS control and CON- 2. Adjust L108 (AFT COIL) so that the P marker
2. Receive B,W pattern signal TRAST control to Max., and the COLOR Fig. 4 Rubber wedge location point is located on the reference level.
3. Set the RGB Bias VR (RJ04, RJ13, RJ24) to control to centre.
MINIMUM. 3. Adjust VR306 for the optimum vertical height VCO Waveform
4. Set the G, B Drive VR (RJ1 4, RJ22) to and over scanning.
CENTER.
5. Set the CONTRAST, BRIGHTNESS, VERTICAL CENTRE ADJUSTMENT
COLOUR control to MIN, and Sub-brightness 1. Receive RETMA pattern signal.
control to CENTER. 2. Adjust VR317 so that the vertical center of the
6. Connect a short P501 to GND. picture may be coincident with the mechanical AFT Waveform
7. Rotate the SCREEN control to clockwise or center of CRT.
CCW so as to obtain dim horizontal line of
one color in R, G and B. HORIZONTAL CENTRE ADJUSTMENT Fig. 5 Picture tube neck component
8. Rotate the R, G and B Bias VR of the other 1 Receive RETMA pattern signal.
color which did not appear on the screen Tube Size Table
2. Adjust VR426 so that the horizontal centre of
clockwise, until a dim white line is obtained. the picture may be coincident with the NO. LOC. 14" 20"
9. Rotate the Screen control gradually anti- mechanical centre of CRT.
clockwise until the last horizontal line 1 CRT ORION POLKOLOR ORION SAMSUNG POLKOLOR
disappears on the screen. FOCUS VOLTAGE ADJUSTMENT A34JLL90X A34EFU13X A4JLL90X A4BECR11XI6 A4BEEV33X01
10.Remove the short P501 and set the CON- 1. Receive RETMA pattern signal. 2 CRT ISM--01 CTV3240--0501 ISM--03 CTV3240--0501
TRAST, BRIGHTNESS, COLOR control to 2. Adjust the FOCUS VOLUME on the FBT and SOCKET
MAX. make the picture on the screen be finest. 3 D/COIL DC--1450 DC--2050
11.Set the G, B Drive VR to obtain the best 4 T401 DCF--2077D FSA24006S DCF-2217J FSA--17013M FSA26012M
white uniformity on the screen. RF AGC ADJUSTMENT 1142.50258
12.Rotate the CONTRAST, BRIGHTNESS, 1. Receive PAL COLOR BAR signal in the VHF 5 L404 L--125 1--76 L--102 L--62 L--76
COLOR controls until a dim raster is obtained
and touch-up adjustment of RGB Bias VR to
high band where the strength of signal can be 6 R413 1W 4.7ohm(F) 1W 0.33ohm(F) 1W 6.2ohm(F) 1W 2.7ohm(F) 1W 2ohm(F) Control
60-65 dB. 7 R416 1/4W 390K 1/4W 330K 1/4W 240K 1/4W 270K 1/4W 240K
obtain the best white uniformity on the screen. 2. Set the CONTRAST control to Max., the
BRIGHTNESS control to provide adequate
8
9
R417
R530
1/4W 390K
1/6W 4.3K
1/4w 330K

1/4W 240K
1/5W 22K
1/4W 270K

1/4W 240K

Diagram
SUB-BRIGHTNESS ADJUSTMENT black and grey scales. 10 R540 1/6W 1K 1/5W 56K
1 White balance adjustment must proceed this 3. Maintain the fine tuning on the screen, and 11 C406 1.6KV 6000P 1.6KV 6000P 1.6KV 6900P 1.6KV 8200P 1.6KV 7500P
procedure. adjust VR130 (AGC DELAY CONTROL VR.) 12 C421 200V 0.47u 200W 0.51u 200V 0.47u 200V 0.51u 200V 0.51u
2. Set the CONTRAST, BRIGHTNESS, COLOR in order that it may be located on the position 13 C414 -- 2KV 470P -- 2KV 660P 2KV 470P
control to MIN. which the picture noise disappear on the
image.

X-Ray Precautions / Adjustments / Tube Size Table / Waveforms / Control Diagram / Troubleshooting / Troubleshooting Cont'd
CRT Diagram / Remote Control Diagram / Main Diagram / Main Diagram Cont'd
GOODMANS 1418 R 2
1. No Raster 3. Auto Search Trouble (Channel Skip) 5. No Colour
Troubleshooting
Guides

2. No Picture (Raster OK)

4. No Vertical Scanning 6. No Specific Colour
(One Horizontal Line On Screen)

X-Ray Precautions / Adjustments / Tube Size Table / Waveforms / Control Diagram / Troubleshooting / Troubleshooting Cont'd
CRT Diagram / Remote Control Diagram / Main Diagram / Main Diagram Cont'd
GOODMANS 1418 R 3
Troubleshooting Guides Cont'd 9. No On-Screen Display
CRT Diagram
7. No Sound (Picture OK)

10. Remote Control Trouble
(Local Control OK)

8. No External AV
Remote
Control
Diagram

X-Ray Precautions / Adjustments / Tube Size Table / Waveforms / Control Diagram / Troubleshooting / Troubleshooting Cont'd
CRT Diagram / Remote Control Diagram / Main Diagram / Main Diagram Cont'd
GOODMANS 1418 R 4
Main Diagram

X-Ray Precautions / Adjustments / Tube Size Table / Waveforms / Control Diagram / Troubleshooting / Troubleshooting Cont'd
CRT Diagram / Remote Control Diagram / Main Diagram / Main Diagram Cont'd
GOODMANS 1418 R 5
Main Diagram Cont'd

X-Ray Precautions / Adjustments / Tube Size Table / Waveforms / Control Diagram / Troubleshooting / Troubleshooting Cont'd
CRT Diagram / Remote Control Diagram / Main Diagram / Main Diagram Cont'd