Pin
No.
Mark
I/O
Division
Function
11
TEST1
I
Input terminal for test
(Connected to power
supply)
12
HFL
I
Track detection signal
input terminal
13
VDD2
I
Power supply terminal
14
VSS
—
GND terminal
15
VDD1
I
Power supply terminal
16
AVSS1
—
GND terminal
17
PEAK
I
Peak signal of RF input
terminal
18 BOTTOM
I
Bottom signal of RF input
terminal
19
ABCD
I
Main beam light quantity
signal input terminal
20
TE
I
Tracking error signal input
terminal
21
FE
I
Focus error signal input
terminal
22
VC
I
1/2 VCC
(reference voltage input
terminal)
23
AVDD1
I
Power supply terminal
24
MAD9
O
Adress output terminal to
DRAM
(Not used, open)
25
DSW1
O
Disc mode setting output
terminal (“H”:track is pit-
low, “L”:high reflection
rate disc)
26
MAD8
O
Adress output terminal to
DRAM
(Not used, open)
27
DSW0
O
Disc mode setting output
terminal (“H”:low reflection
rate disc, “L”:high
reflection rate disc)
28
MAD7
O
Adress output terminal to
DRAM
(Not used, open)
29
SGC
O
AGC control signal output
terminal
50
Содержание SJ-MJ75
Страница 9: ...9 ...
Страница 10: ... Check the P C B A side as shown below 5 1 2 Checking for the P C B B side 10 ...
Страница 11: ... To check the IC501 on side B of P C B refer to the table 1 and illustration below 11 ...
Страница 12: ...12 ...
Страница 13: ...5 2 Replacement for the intermediate cabinet Follow the Step 1 Step 3 of item 5 1 1 13 ...
Страница 14: ...14 ...
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Страница 21: ...5 4 Replacement for the traverse motor Follow the Step 1 Step 3 of item 5 1 1 21 ...
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