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MODELS: WS-48511 / WS-55511 / WS-55711 / WS-65511 / WS-65611 / WS-65711 / WS-65712 / WS-73711 / WS-B55
[HV Circuit]
3. HV Regulation
Measuring
DC Voltmeter
Instrument
Test Point
DT connector pins 3 & 6
------
Ext. Trigger
Measuring
-------
Range
Video Signal
Input Signal
Monoscope
Input Terminal
Video Input
[Video Circuit]
4. Main/Sub Y Level
Measuring
Oscilloscope
Instrument
EA connector pins 15 & 1
Test Point
------
Ext. Trigger
Measuring
------
Range
Input Signal
Color Bars
Input Terminal
Video Input
Purpose:
To set the CRT Anode voltage.
Dark Picture
Symptom:
Note: This adjustment must be rechecked following Adjustment 9 CRT Cutoff.
1. Supply a video monoscope signal.
2. Sent Contrast to maximum, and Brightness to mid position.
3. Connect a DC volt meter between pins 3 and 6 of the DT connector.
(Positive lead to pin 3)
4. Activate the Conv-Misc Mode.
5. Select Item "1 HVOL" (screen goes black).
6. Adjust Item "1 HVOL" for 15.4V ±0.1V on the meter.
7. Save data and exit the Conv-Misc mode.
8. Confirm that the voltage does not change more than 0.15V.
Note: This adjustment must be performed if E2RESET or Convergence E2RESET
are activated.
To set picture luminance
Purpose
Symptom:
Excess or insufficient brightness.
1. Supply a color bar signal to a Video Input (not an RF input).
2. Select the color bar signal for both the main and sub pictures.
3. Connect the oscilloscope to connector EA pin 15.
4. Activate the Adjustment Mode
5. Select Item "3 YDRM" in the MNTS function.
6. Adjust the data for 0.7 Vp-p max. - 0.67 Vp-p min. at EA pin 15.
(If it cannot be adjusted within this range, set to the lower value)
7. Move the oscilloscope to EA pin 1.
8. Select Item "3 YDRS" in the Sub Matrix function.
9. Adjust the data to equal the MAIN-Y Gain (+0.01V -0.04V).
CIRCUIT ADJUST MODE
Activate ........ MENU-2-1-5-7
Function .................AUDIO
Item No. .................VIDEO
Adjust Data ...........ADJUST
Save Data .... .........ENTER
Exit ..............MENU (twice)
Page 39
CONVERGENCE MODE
Activate ........MENU-2-1-5-9
Misc. ........................."6"
Coarse........................"5"
Fine ..........................."4"
Color (R,G or B)......AUDIO
Item No..................VIDEO
Adjust/Move..........ADJUST
Cursor Toggle.........ENTER
Save & Exit.....MENU (twice)
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