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CRT CUT-OFF, BACKGROUND AND SUB-CONTRAST
ADJUSTMENT (Continued)
3. MAX BEAM ADJUSTMENT : R1631
1. Receive the E-5CH "MONOSCOPE PATTERN" signal.
2. Using the remote controller, call the Video Normal mode.
3. Connect the ammeter between TP601 and TP602.
• Ammeter's full scale
: 3mA range
• Ammeter's positive (+) read
: TP601
• Ammeter's negative (-) read
: TP602
4. Adjust R1631 so that the beam current be 2.0 mA.
Note: Before starting this adjustment, warm up the unit for 30 minutes or longer at a beam current of 1900
± 50µA.
2
4. SUBBRIGHTNESS (I
C bus adjustment)
1. Receive the JA12CH (window pattern) signal.
2. Using the remote controller, call up the normal video mode.
3. With a brightness meter ( with "Y" of CA - 100 ), adjust the sub-brightness control so that the right-hand dark/
white portion be 1.8 cd.
HORIZONTAL AND VERTICAL CIRCUIT ADJUSTMENT
1. MAIN PICTURE ADJUSTMENT
For this items 1 thru 6 below, use the remote controller in the service mode.
1. V-AMPLITUDE 50:
Adjust the overscan 8.5% (E-5).
2. V-LINEARITY 50:
Adjust to get the best linearity.
3. V-S-CORRECTION 50:
Preset (readjust if the linearity is poor).(10)
4. V-PHASE 50 (V-CENTER):
Align the screen center with CRT's geometrical center (E-5)
5. H-PHASE 50 (H-CENTER):
Align the screen center with CRT's geometrical center (E-5)
6. H-SIZE:
Adjust the overscan 8.5% (E-5).
7. EW-PALABOLA (SIDE-PIN):
Adjust so that the second vertical lines from the left and right ends of the
crosshatch pattern be straight (E-2).
8. V-BIAS:
Preset (7)
9. V-S-CORRECTION:
Preset (15)
10.EW-CORNER (SUB-SIDEPIN):
Adjust so that the end of the crosshatch pattern be straight.
11.TRAPEZIUM:
Preset (Readjust ifnthe trapezium is poor). (25)
12.V-COMPENSATION:
Preset (5)
13.H-COMPENSATION:
Preset (5)
14.Others:
For the V-AMPLITUDE 60, V-LINEARITY 60, V-S-CORRECTION 60, V-
PHASE 60, H-PHASE60, and H-SIZE 60 adjustment, their corrected data
are automatically entered when the corresponding 50 Hz mode adjust-
ments are made.
The signals of the receive channnels in paretheses are follows.
(E-2):Crosshatch pattern (50Hz) (E-5):Monoscope pattern (50Hz)
If an error is too much in checking any of the 60Hz items, readjust the item in 60Hz mode
10-1
HORIZONTAL AND VERTICAL CIRCUIT ADJUSTMENT
2. FOCUS ADJUSTMENT
1. Receive the E-5CH "MONOSCOPE PATTERN" signal.
2. Using the remote controller, call the Video Normal mode.
3. Adjust the focus control so that the "SHARP" at the upside of the screen.
SUB-SCREEN POSITION ADJUSTMENT
1. H-POSITION (H-POS), V-POSITION (V-POS)
(I
2
C bus adjustment)
1. H-Position
The data has been factory-set.
If the sub-screens in the four corners are hori-
zontally malpositioned, readjust data so that the
right and left margins be the same.
For the adjustable range, see the figure at right.
2. V-Position
The data has been factory-set.
If the sub-screens in the four corners are verti-
cally malpositioned, readjust data so that the top
and bottom margins be the same.
For the adjustable range, see the figure at right.
* The horizontal and vertical positions are adjusted
in order to offset the entire range.
<adjustment procedure>
Make sure the screen size (H/V), centering (H/V), linear-
ity (V), parabolism (H), and parabolic corner (H) are all
well adjusted. Receive the E-5CH master screen signal.
Adjust the left and top margins of the upper left sub-
screen to 85%. (See the figure at right.)
Note that raster rotation must be considered too.
2. SUB H-PHASE 50Hz (HSIDLY5)
1. The data has been factory-set.(E-5)
If the picture is noticeably degraded, readjust the data so that the left and right overscans in the sub-screen be
the same.
3. SUB H-PHASE 60Hz (HSIDLY6)
1. The data has been factory-set.
When the SUB-H-SHIFT (50) data is adjusted, the corrective data is automatically programmed.
Top end of effective CRT screen
Right end of effective
A
CRT screen
C
D
Left end of effective
CRT screen
B
Bottom end of effective CRT screen
85%
85%
10-2
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