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Precautions on adjustment:
1. Perform the adjustment in the given order.
2. Power supply voltage: DC 8.4 V
3. Equipment required
Electrical adjustment requires the following measuring equip-
ment.
(1) Oscilloscope: 2 phenomena, band 30 MHz or more, with de-
lay mode (use 10 : 1 probe unless otherwise specified)
(2) Pattern generator
(3) Regulated power supply
(4) Digital voltmeter
(5) Frequency counter
(6) Connector for adjustment
(7) Kent paper (for Power Saving Sensor adjustment)
4. Measurement points for adjustment are located at CN1003 on
the YC-148 (G) board and at CN206 on the MA-324 (G) board.
The pin No. and signal name of CN1003 and CN206 are listed
below.
• YC-148 (G) Board, CN1003
Pin No.
Signal Name
1
GND
2
GND
3
GND
4
4FSC
5
GND
• MA-324 (G) Board, CN206
Pin No.
Signal Name
1
SIG R 1
2
A
3
SIG G 1
4
POWER SW
5
SIG B 1
6
ENTER
7
INT H
8
VIDEO/XPC IN
Preparation:
Connect electrical blocks as shown below.
pattern
generator
AUDIO/VIDEO jack
YC-148 (G) board
(J1002)
DC 8.4V
DC IN 8.4 V jack
DD-107 (G) board
SECTION 3
ELECTRICAL ADJUSTMENTS
Pin No.
Signal Name
6
GND
7
Y OUT
8
VIDEO G
9
N.C
10
GND
Pin No.
Signal Name
9
GND
10
GND
11
B
12
COM R
13
C
14
COM L
15
SIG CEN
16
P SIG B
RGB terminal
MA-324 (G) board
(J101)
Set
PC
5. Setting up Input Signals
(1) Video Signal
In adjusting this set, video signals obtained from the pattern
generator are used, and therefore these video output signals
must satisfy the specification. Connect the oscilloscope to the
VIDEO IN terminal, and confirm that the sync signal ampli-
tude of video signals is approximately 286 mV, the amplitude
of video part is approximately 714 mV, burst signal amplitude
is approximately 286 mV and flat, and the level ratio of burst
signal to "red" signal is 0.30 : 0.705.
• When color bar signals are entered
White (75%)
±
535
3 mV
±
286
3 mV
Pedestal
Horizontal sync signal
Fig. 3-1. Pattern generator's color bar signals
(2) PC Signal (RGB signal)
Signal mode
PC98
VGA-TEXT
VGA-GRAP
VGA72
VGA75
MAC13'
VGA85
SVGA56
SVGA60
SVGA72
SVGA75
SVGA85
MAC16'
XGA60
3-15
White (100%)
±
714
3 mV
286
Black
Red
±
Burst signal
672
3 mV
(to be flat)
H
V
HDISP
(kHz)
(Hz)
(dots)
24.82
56.41
640
31.47
70.08
640
31.47
59.94
640
37.86
72.82
640
37.50
74.99
640
35.00
66.67
640
43.27
85.01
640
35.16
56.26
800
37.88
60.32
800
48.08
72.19
800
46.88
75.01
800
53.68
85.07
800
49.73
74.55
832
48.36
59.99
1024
±
3 mV
VDISP
(dots)
400
362
480
480
480
480
480
600
600
600
600
600
624
768
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