7-5
7-5. Adjustment Related Parts Arrangement
MB-80 BOARD (Side A)
11
9
7
5
3
1
8
6
2
1
12
CN005
RV479
VIDEO
LEVEL
W001
TP025
XULK
TP020
36 MHz
TP019
33 MHz
TP018
27 MHz FREE-RUN
RV001
27 MHz FREE-RUN
CT022
24 MHz
CT001
22 MHz
TP022
512 fs
TP021
PH-COMP
30
20
1
80
51
IC770
ICS140
IC002
CN382
IC381
F001
CN954
T901
1
3
PS-408/413 BOARD (Side A)
7-6 E
CN101
CN201
VR201
+5.2V
1
12
SR-740/745 BOARD (Side A)
5. Checking Composite Video Output Y (MB-80 board)
<Purpose>
This checks composite video output Y. If it is incorrect, correct
brightness will not be attained when connected to, for instance, pro-
jector.
Mode
CXD1914 (ENC) check in test mode menu “0”
Syscon Diagnosis
Signal
Color bars
Test point
CN005
5
pin (terminating 75 )
Instrument
Oscilloscope
Specification
1 ±0.05 Vp-p
Checking method:
1) Confirm that the Y level is 1 ±0.05 Vp-p.
7. Checking S Video Output DC Level (MB-80 board)
<Purpose>
This checks signals for S1 and S2 compatible TV. If they are not
correct, the TV will not switch automatically to letter box, etc.
Mode
CXD1914 (ENC) check in test mode menu “0”
Syscon Diagnosis
Signal
Color bars
Test point
CN005
9
pin
Instrument
Digital voltmeter
Specification
S-terminal 0V: 0V
S-terminal 5V: 5.0 V
Connection:
Figure 7-13
6. Checking S Video Output S-C (MB-80 board)
<Purpose>
This checks whether the S-C satisfies the NTSC Standard. If it is
not correct, the colors will be too dark or light.
Mode
CXD1914 (ENC) check in test mode menu “0”
Syscon Diagnosis
Signal
Color bars
Test point
CN005
9
pin
Instrument
Oscilloscope
Specification
286 ±20 mVp-p
Connection:
Figure 7-14
+0
–1.5
Checking method:
1) In the test mode initial menu “0” Syscon Diagnosis, select S-
terminal 0V.
Confirm that the voltage at CN005
9
pin is 0V.
2) Press any key to select S-terminal 5V.
Confirm that the voltage at CN005
9
pin is 5.0 V.
+0
–1.5
1 ±0.05 Vp-p
Checking method:
1) Confirm that the S-C burst is 286 ±20 mVp-p.
286 ±20 mVp-p
Oscilloscope
Digital voltmeter
8
9
100
µ
F
75
Ω
±
1%
100k
±
1%
CN005
+
8
9
100
µ
F
75
Ω
±
1%
100k
±
1%
CN005
+
Summary of Contents for DVP-S3000 Operating Instructions / Mode d’emploi
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