Gd1418R.pdf part of Goodmans 1418R Gd1418R.rar, 1418R text manual preview

Text preview for : Gd1418R.pdf part of Goodmans 1418R 1418R

Back to : Gd1418R.rar | Home

GOODMANS 1418 R
General Information Also Covers DTC-14B1 VUP Daewoo CP-325 Matrix
Item
CRT Purity Adjustments - See Note

1
MAIN B + (+103V) ADJUSTMENT 1. Receive RETMA pattern signal. 2. Set the picture level to NORMAL mode. 3. Connect DC voltage meter to the TP7 and adjust VR801 for +103V DC. VCO/AFT ADJUSTMENT 1. APPARATUS CONNECTION & PRESETTING CONNECTION 1. Connect H-out of LSW-480 to X-axis of the oscilloscope and V-out of LSW-480 to Y-axis of the oscilloscope. 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. PRESET 1) Oscilloscope Scaling 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. 2) LSW-480 MARKER FREQ. SETTING.

Waveforms

X-Ray Precautions
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 25.5kv (14": 23.5kv) at max beam current. The high voltage must not, under any circumstances, exceed 27.5kv (14": 25.0kv). Each time a receiver requires servicing, the high voltage should be checked following the HIGH VOLTAGE CHECK procedure. It is recommended the reading of the high voltage be 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 X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as specified in the parts list. 3. Rotate the SUB-BRIGHTNESS VR (VR513) gradually CCW until the last beam disappears on the screen. COLOUR AMPLITUDE AND PHASE ADJUSTMENT 1. Receive a PAL/DEM Signal (Philips Model PM5518) 2. Connect the probe of an oscilloscope to R203 (TP6:B-Y output) 3. Adjust L510 and VR516 in order to make the waveform fine on the screen like Fig. 1. Fig. 1 Fig. 2 Fig. 1 Centre Convergence by Convergence Magnets Fig. 2 Circumference Convergence by DEF. Yoke

B/G P-I

fp(n+1) fs 31.9 33.4 31.9 33.5

fc 34.5 35.07

fp-2 36.9 37.5

fp 38.9 39.5

fs(n-1) 40.4 41

Connection for PIF Adjustments Fig. 3 Adjustment of magnets II. ADJUSTMENT OF VCO (B/G, I) 1. Connect the test point of LSW-480 to TP2. 2. Adjust L109 (ACO COIL) so that the P marker point is located on the reference level. Ill. ADJUSTMENT OF AFT B/G, I) 1. Connet the test point of LSW-480 to TP3 2. Adjust L108 (AFT COIL) so that the P marker point is located on the reference level. VCO Waveform

Adjustments
SCREEN & WHITE BALANCE ADJUSTMENT 1.This adjustment is to be made only after warming up at least 15 minutes. 2. Receive B,W pattern signal 3. Set the RGB Bias VR (RJ04, RJ13, RJ24) to MINIMUM. 4. Set the G, B Drive VR (RJ1 4, RJ22) to CENTER. 5. Set the CONTRAST, BRIGHTNESS, COLOUR control to MIN, and Sub-brightness control to CENTER. 6. Connect a short P501 to GND. 7. Rotate the SCREEN control to clockwise or CCW so as to obtain dim horizontal line of one color in R, G and B. 8. Rotate the R, G and B Bias VR of the other color which did not appear on the screen clockwise, until a dim white line is obtained. 9. Rotate the Screen control gradually anticlockwise until the last horizontal line disappears on the screen. 10.Remove the short P501 and set the CONTRAST, BRIGHTNESS, COLOR control to MAX. 11.Set the G, B Drive VR to obtain the best white uniformity on the screen. 12.Rotate the CONTRAST, BRIGHTNESS, COLOR controls until a dim raster is obtained and touch-up adjustment of RGB Bias VR to obtain the best white uniformity on the screen. SUB-BRIGHTNESS ADJUSTMENT 1 White balance adjustment must proceed this procedure. 2. Set the CONTRAST, BRIGHTNESS, COLOR control to MIN.

Fig. 1 VERTICAL HEIGHT ADJUSTMENT 1. Receive RETMA pattern signal 2. Set the BRIGHTNESS control and CONTRAST control to Max., and the COLOR control to centre. 3. Adjust VR306 for the optimum vertical height and over scanning. VERTICAL CENTRE ADJUSTMENT 1. Receive RETMA pattern signal. 2. Adjust VR317 so that the vertical center of the picture may be coincident with the mechanical center of CRT. HORIZONTAL CENTRE ADJUSTMENT 1 Receive RETMA pattern signal. 2. Adjust VR426 so that the horizontal centre of the picture may be coincident with the mechanical centre of CRT. FOCUS VOLTAGE ADJUSTMENT 1. Receive RETMA pattern signal. 2. Adjust the FOCUS VOLUME on the FBT and make the picture on the screen be finest. RF AGC ADJUSTMENT 1. Receive PAL COLOR BAR signal in the VHF high band where the strength of signal can be 60-65 dB. 2. Set the CONTRAST control to Max., the BRIGHTNESS control to provide adequate black and grey scales. 3. Maintain the fine tuning on the screen, and adjust VR130 (AGC DELAY CONTROL VR.) in order that it may be located on the position which the picture noise disappear on the image. Fig. 5 Picture tube neck component Tube Size Table
NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 LOC. CRT CRT SOCKET D/COIL T401 L404 R413 R416 R417 R530 R540 C406 C421 C414 ORION A34JLL90X ISM--01 DC--1450 DCF--2077D L--125 1W 4.7ohm(F) 1/4W 390K 1/4W 390K 1/6W 4.3K 1/6W 1K 1.6KV 6000P 200V 0.47u -- 14" POLKOLOR A34EFU13X CTV3240--0501

Fig. 4 Rubber wedge location

AFT Waveform

20" ORION A4JLL90X ISM--03 DC--2050 DCF-2217J L--102 1W 6.2ohm(F) 1/4W 240K 1/4W 240K 1/5W 22K 1/5W 56K 1.6KV 6900P 200V 0.47u -- SAMSUNG A4BECR11XI6 CTV3240--0501 POLKOLOR A4BEEV33X01

FSA26012M
L--76 1W 2ohm(F) 1/4W 240K 1/4W 240K 1.6KV 7500P 200V 0.51u 2KV 470P

FSA24006S 1142.50258 1--76 1W 0.33ohm(F) 1/4W 330K 1/4w 330K 1.6KV 6000P 200W 0.51u 2KV 470P

FSA--17013M
L--62 1W 2.7ohm(F) 1/4W 270K 1/4W 270K 1.6KV 8200P 200V 0.51u 2KV 660P

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
Troubleshooting Guides
1. No Raster

2
3. Auto Search Trouble (Channel Skip) 5. No Colour

2. No Picture (Raster OK) 4. No Vertical Scanning (One Horizontal Line On Screen) 6. No Specific Colour

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
Troubleshooting Guides Cont'd
7. No Sound (Picture OK) 9. No On-Screen Display

3
CRT Diagram

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
Main Diagram

4

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
Main Diagram Cont'd

5

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