ctv 1010xktl
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- CTV-1010XKTL
- CTV-1010XKTL
CTV-1010XKTL
Service Manual
Service Manual
4. Alignment and Adjustments
4-1 Preadjustment
4-1-1 Factory Mode
1. Do not attempt these adjustments in the VIDEO mode.
2. The Factory Mode adjustments afe necessary when either the EEPROM(QO02) or the CPT
is replaced.
3. Do not tamper with the "Adjustment" screen of the Factory Mode menu. The screen is intended
only for factory use.
4-1-2 When EEPROM (0002) is replaced
1. When QO02 is replaced ali adjustment data revert to their initial values. It is necessary to reprogram this data.
2. After QO02 is replaced, warm up the TV for 10 seconds.
4-1-3 When CPT is replaced
1. Make the following the adjustments after setting up purity and convergence:
White Balance
Vertical center
Vertical size
Horizontal size
4-2 Factory I Servi ce Mode
4-2-1 Procedure for the "Adjustment" Mode
1. This mode uses the standard remote control. The Factory (Service) Mode is activated by
pressing the"Factory"key on the remote control.
2. The Factory Mode will be displayed. The Factory Mode has six components :
VCO ADJ, SCR ADJ, HRS, HEIGHT, W. Bal, AGC Auto.
3. Access the Adjustment Mode by pressing the VOLUME keys (Up or Down). The adjustment
Parameters adjusted afe listed in the accompanying table, and they afe selected by pressing
the PROGRAM keys (Up or Down).
4. The VOLUME keys increase or decrease the adjustment values.
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4-2-2 Servi ce Adjustment Parameter .
Function OSD Abbreviation Range Initial Date
PIF VCO VCO ADJ O -127 64
Screen voltage SCR ADJ
Horizontal SHIFT HRS O -63 32
Vcrtical Amplitude HEIGHT O -63 32
REO Gain R-H O -63 35
Green Gain G-H O -63 35
Blue Gain B-H O -63 35
REO Cutoff R-L 0-511 380
Green Cutoff G-L O -511 380
Blue Cutoff B-L 0-511 380
Auto Gain Contrai AGC Auto O -63 47
Wide PIF VCO VCO CORS O -15 8
Narrow PIF VCO VCO Fine O -127 64
Auto Gain Contrai AGC Manual 0-63 47
4-3 Other Adjustments
4-3-1 Generai Alignment Instructions
1. Usually, a colar TV needs only slight to.uch-up adjustment upon installation. Check the
basic characteristics such as height. horizontal and vertical sync and focus.
2. Observe the picture far good black and white details. There should be no objectionable
.colar, shading: if colar shading is present, perform the purity and convergence
adjustments described below.
3. Use the specified test equipment or its equivalent.
4. Correct impedance matching is essential.
5. Avoid overload. Excessive signal from a sweep generator might overload the front-end of
the TV. When inserting signal markers. do not allow the marker generator to distort test
results.
6. Connect the TV only to an AC power source with voltage and frequency as specified on the I
back cover nameplate.
7. Do not attempt to connect or disconnect any wires while the TV is turned on. Make sure that
the power cord is disconnected before replacing any parts.
8. To protect against shock hazard, use an isolation transformer.
4-3-2 Automatic Degaussing
A degaussing coil is mounted around the picture tube, so that external degaussing after
moving the TV should be unnecessary. 8ut the receiver must be properly degaussed upon
installation .
The degaussing coil operates far about 1 second after the power is switched ON. If the set is
moved or turned in a different direction, the power should be OFF far at least 10 minutes.
If the chassis or parts of the cabinet become magnetized, poor colar purity will result. If this
happens, use an external degaussing coil. Slowly move the degaussing coil around the
faceplate of the picture tube and the sides and front of the receiver. Slowly withdraw the coil to
a distance of about 6 feet before turning power OFF.
If colar shading persists, perform the following Colar Purity and Convergence adjustments.
4-3-3 High Voltage Check
CAUTION : There is no high voltage adjustment chassis. The 8+ power supply should be
+8.5 volts (see table 1).
1. Connect a digital voltrneter to the second anode of the picture tube.
2. Turn on the TV. Set the 8rightness and Contrast controls to minimum (zero beam current).
3. Adjust the 8rightness and Contrast controls to both extremes.
Ensure that the high voltage does not exceed Maximum High voltage (see table 1 ) under
any conditions.
INCH +8 (Volts) Maximum High Voltage
10 8.5 23 KV
Table 1 +8 and Maximum High voltage
4-3-4 PIF VCO Adjustment
1. Input 189.25MHz signal(O7ch) to antenna. Use a pattern generator.
or tune in the active station in your area.
2. Adjust VCO in the service mode.
,
4-3-5. RF AGC Adjustment
.
1. In put a VHF HIGH (EU 7CH) channel (65d81J)
2. Adjust the AGC AUTO in the Factory Mode.
3. 8ut Now TV set is noting Adjustrnent. (Default Data: 47)
4-3-6 Screen Adjustment
1. Tune to the ACTIVE channel.
2. Adjust the FACTORY key is pressed on Remote Controller, Factory Mode shows up.
3. Selected OSO colar is red.
4. When the VOL + keyis pressed, the screen turns to one horizontalline.
5. Adjust SCREEN VR of FBT to make 1 dot bar.
6. After adjustment, once VOL + key is pressed again, it turns to FACTORY Mode.
4-3-7 WHITE BALANCE ADJUSTMENT (MANUAL)
1. Tune the monochrome (Lion head pattern) channel and warm up the set far 20 minutes.
2. Select the FACTORY MODE. THE FACTORY (Service) MODE is activated by pressing the
"FACTORY" button on the remote contrai.
3. On Factory mode, select number 5.
4. By using PROGRAM UP/DOWN button, select "WB ADJ".
5. Press the VOL + button to make horizontalline.
6. Adjust the VR Screen far a 1 dot line.
7. Adjust the cut-off controls to obtain the white horizontalline. The lines may look like white if the
cut-off controls are adjusted properly.
Remocon
Button NO 1 2 3 5 6 7
F ti RED- GREEN- BLUE- RED- GREEN- BLUE-
unc on
Default 35 35 35 380 380 380
Data
Example of the adjustment (If reference colar is BLUE)
1. On horizontalline (blue colar)
2. Press button no. 5 on Remote Controller.
3. By using VOL +,- button, make/set magenta colar in 1 dot line.
4. Press button no. 6 on Remote Controller.
5. By using VOL +,- button, adjust the colar to become white horizontalline.
6. To make correct white line, repeat the above no.2-5.
7. After adjustment, press factory button to return to factory mode.
8. In case of W/B adjustment in high iuminance condition, it should be done in R-H, G-H, B-H
selection
D . D .
D .
C ff Cnve nve nve ufo utoff Cutoff
4-3-8 FOCUS Adjustment
1. Input a cross dot signal.
2. Adjust the tuning contrai far clearest picture.
3. Adjust the FOCUS contrai far well defined scanning lines in the center area of the screen.
I
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4-3-9 Purity Adjustment
1. Warm up the receiver far at least 30 minutes.
2. Plug in the CRT deflection yoke. Tighten the clamp screw.
3. Plug the convergence yoke into the CRT and set it as shown in Fig. B-1.
4. Input a black and white signal.
5. Fully demagnetize the receiver by using an external degaussing coil.
6. Turn the CONTRAST and BRIGHTNESS controls to maximum.
7. Loosen the clamp screw holding the yoke. Slide the yoke backward or forward to produce a
vertical green belt. (Fig. B-2)
8. Tighten the convergence yoke.
9. Slowly move the deflection yoke forward. Adjust far the best overall green screen.
10. T emporarily tighten the deflection yoke.
11. Produce blue and red rasters by adjusting the-low-light controls.
Check far good purity in each field.
12. Tighten the deflection yoke.
4-3-10 Center Convergence Adjustment
1. Warm up the receiver far at least 30 minutes.
2. Adjust the two tabs of the 4-pole magnets: Change the angle between them.
Superimpose the red and blue verticallines in the center area of the screen.
3. Adjust the BRIGHTNESS and CONTRAST controls far a well-defined picture.
4. Adjust the two tabs of the 4-pole magnets, and change the angle between them.
Superimpose the red and the blue verticallines in the center area of the screen.
5. Turn the both tabs at the same time, keeping the angle constant, and superimpose the red
and blue horizontallines in the center of thescreen.
6. Adjust two-tabs of 6-pole magnets to superimpose the red and blue lines onta the green.
Adjust the angle affects the verticallines, and rotating both magnets affects the horizontallines.
7. Repeat adjustrnents 2-6, if necessary.
8. Since tlle 4-pole and 6-pole magnets interact, the dot movement is complex(fig B-3).
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FIG. B-1 CONVERGENCE MAGNET ASSEMBL Y
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