6-7
6-4. Adjustment after EQ-45 Board
Replacement
6-4-1. ADV Envelope Level Adjustment
Tools
Measuring equipment: Oscilloscope
Procedures
STEP 1
1.
Connect the oscilloscope to TP103 and TP423 on the
EQ-45.
2.
Play back the alignment tape ZR5-1/1P.
ZR5-1
: for NTSC
ZR5-1P : for PAL
3.
On the menu of maintenance mode, set as follows:
A1: RF ADJUST
A19: ADV LEVEL
4.
Adjust at
Ach LEVEL
.
(When the search dial is turned while pressing the JOG
button, the adjustment data can be changed.)
5.
Adjust at
Cch LEVEL
.
(When the search dial is turned while pressing the JOG
button, the adjustment data can be changed.)
Oscilloscope
TP423/EQ-45(
*
F-1)
TRIG: TP103/EQ-45 (C-1)
A = 800
±
100 mV
A
A
B
C
D
E
F
G
1
2
3
4
A
B
G
MADE IN JAPAN
1
2
3
4
EQ - 45A
CNF BD
EQ
CNF
AC EQ
ADV
BD EQ
C
D
E
F
ADV AC EQ
CNF AC
PLL/VIT
B
D PLL/VIT
TP103
TP104
B
G
F
E
D
C
B
A
1
2
3
4
A
EQ - 45A
ADV AC EQ
CNF B
D
B
C
D
E
F
G
1
2
3
4
ADV BD EQ
CNF
AC EQ
CNF BD EQ
CNF AC PLL/VI
ADV BD PLL/VI
TP423
TP523
STEP 2
1.
Connect the oscilloscope to TP104 and TP523 on the
EQ-45.
2.
Play back the alignment tape ZR5-1/1P.
3.
On the menu of maintenance mode, set as follows:
Ajust at
Bch LEVEL
.
(When the search dial is turned while pressing the JOG
button, the adjustment data can be changed.)
4.
Adjust at
Dch LEVEL
.
(When the search dial is turned while pressing the JOG
button, the adjustment data can be changed.)
Oscilloscope
TP523/EQ-45(
*
D-1)
TRIG: TP104/EQ-45 (C-1)
A = 800
±
100 mV
STEP 3
1.
Save adjustment data.
2.
On the menu of maintenance mode, set as follows:
A1F: NV-RAM CONTROL
3.
Execute
SAVE ALL ADJUST DATA
.
6-4. Adjustment after EQ-45 board replacement
A
*
B SIDE
A SIDE
ADV BD
LEVEL
ADV BD
SEL
A
ADV AC
LEVEL
ADV AC
SEL
Summary of Contents for DVW-522
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Page 49: ...2 9 2 4 1 Printed Circuit Board Locations Rear view Front view ...
Page 50: ...2 10 Top view of casssette compartment 2 4 1 Printed Circuit Board Locations Top view ...
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Page 136: ...7 2 7 2 OVERALL 1 4 OVERALL 1 4 7 2 Overall Signal Processing System OVERALL 1 4 DVW 522 522P ...
Page 137: ...7 3 7 3 OVERALL 2 4 OVERALL 2 4 Signal Processing System OVERALL 2 4 DVW 522 522P ...
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