9
9-1 9-2
14D1-S/G/W
14D2-S/G
HORIZONTAL AND VERTICAL DEFLECTION LOOP ADJUSTMENT
No. Adjusting point Adjusting procedure/conditions Waveform and others
V-SLOPE (I
2
C
BUS CON-
TROL)
V-SHIFT-50
(I
2
C BUS
CONTROL)
V-AMP50 (I
2
C
BUS CON-
TROL)
H-SHIFT (50)
(H-CENTER)
S-CORREC-
TION (I
2
C BUS
CONTROL)
SUB-SHARP-
NESS
Focus
1. Receive Monoscope Pattern Signal.
2. Call the "V-LIN" mode.
3. Increase or decrease "V-LIN" by Volume key till
the horizontal line in the center of monoscope is
just at the position where the blanking starts.
1. Call the "V-CENT" mode.
2. Increase or decrease "V-CENT" by Volume key
till the picture is centered.
1. Call the "V-AMP" mode.
2. Increase or decrease "V-AMP" by Volume key to
set overscan of 9.5% typical.
Adjustment Spec 9.5% range +1% -0%.
1. Call the "H-CENT" mode.
2. Increase or decrease "H-CENT" by Volume key
to center the picture horizontal.
1. SET DATA TO 17.
* Check the E-5 CH Monoscope Pattern then re-
adjust V-Slope, V-Shift and V-Amp to makesure
adjustment is in acceptable Ring-Shaped.
1. SET DATA TO 20.
1
2
3
4
5
1. Receive the "Monoscope Pattern" signal.
2. Press R/C to set Picture NORMAL condition.
3. Adjust the focus control to get the best focusing.
1
PAL CHROMA ADJUSTMENT
No. Adjusting point Adjusting procedure/conditions Waveform and others
SUB COLOUR
(I
2
C BUS
CONTROL)
1. Receive the "PAL Colour Bar" signal.
2. Press R/C to set Picture Normal condition.
3. Connect the oscilloscope to
Red cathode(D881 Cathode).
» Range : 20 V/div. (AC) (Using 10:1 probe)
» Sweep time : 10 µsec/div.
4. Using the R/C call "SUB COL" in SERVICE mode.
Adjust SUB COLOUR bus data, so that the 75%
White & Red portions of PAL Color Bar be at the
same level shown as Fig. 1-1.
5. Clear the SERVICE mode.
1
Fig. 1-1
CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST ADJUSTMENT
(Continued)
No. Adjusting point Adjusting procedure/conditions Waveform and others
Max
beam check
1. Receive the "Monoscope Pattern" signal.
2. Press R/C to set Picture NORMAL condition.
3. Connect the DC miliammeter between TP603 (+)
& TP602 (–).
(Full Scale: 3 mA Range)
4. Beam current must be within 800 ± 100 µA.(14")
4
6
No. Adjusting point Adjusting procedure/conditions Waveform and others
SUB-TINT (I
2
C
BUS CON-
TROL)
1. Receive the "NTSC 3.58 Colour Bar" signal thru
AV in.
2. Connect the oscilloscope to TP47B (P882 pin 5)
BLUE-OUT.
» Range : 100mV/div. (AC)(Use Probe 10:1)
» Sweep time : 10 µsec/div.
3. Call the "SUB-TINT" mode in service mode. Ad-
just the "SUB-TINT" bus data to obtain the wave-
form shown as Fig. 1-1.
4. Clear the SERVICE mode.
1
Fig. 1-1
NTSC CHROMA ADJUSTMENT
No. Adjusting point Adjusting procedure/conditions Waveform and others
BEAM PRO-
TECTOR
1. Receive "Monoscope Pattern" signal.
2. Set CONTRAST MAX.
3. Set BRIGHT MAX.
4. During the Collector & Emitter of Q883/5/7 short,
make sure the protector ON and switch to standby
mode.
1 * Select one of Q883/5/7 to do
each short test.
H•V PROTEC-
TOR
1. Receive "Monoscope Pattern" signal.
2. Connect output of Bias Box to D603 cathode
(R610 side).
3. Set voltage of Bias Box to 18V and make sure
the protector is not work.
4. Set voltage of Bias Box to 27V, and make sure
the protector is work.
2
Other
protectors
1. Once finish rectified Electrolytic Capacitor short
testing in +B line, check all possible damaged
components on +B line.
(Use random selected set for inspection)
3
PROTECTOR OPERATION CHECKING
No. Adjusting point Adjusting procedure/conditions Waveform and others
VIDEO AND
AUDIO
OUTPUT
CHECK
1. Receive the "PAL Color Bar" signal (100% White
Color Bar, Sound 400 Hz 100% Mod).
2. Terminate the Video output with a 75 ohm imped-
ance. Make sure the output is as specified (1.0
Vp-p ±3 dB).
3. Terminate the Audio output with a 10k ohm im-
pedance. Make sure the O/P is as specified
(1.76 Vp-p ±3 dB).
1
VIDEO AND
AUDIO INPUT
CHECK
1. Using the TV/AV key on the remote controller,
make sure that the modes change in order of TV,
AV & TV again and the video & audio output are
according to the input terminal for each mode.If
connect input to Front and Rear AV terminal, in-
put terminal of Front AV will be selected.
2
A/V INPUT AND OUTPUT CHECKING
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