Sony UP895 Service Manual - Page 35
Platen Motor Control, Rear DIP switch S300 - up 895 color
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Rear DIP switch (S300) IC304-66, 69pin SWSEL[3-0] Function 0 1INTERRUPT 1 2POST FEED 2 3ASPECT 3 4MEMORY 4 5DIRECTION 5 6SCAN1 6 7SCAN2 7 8THRUE/EE 8 9AGC 9 0RESERVED 10 !-INPUT IC304-66, 69pin:SWDATA L (Default) ON ON 4:3 FRAME NORMAL WIDE1 _ THRUE OFF _ B&W H OFF OFF 1:1 FIELD REVERS WIDE 2 NORMAL EE ON _ COLOR 4-4-3. Platen Motor Control A stepping motor for platen driving controls the forward and reverse rotation and rotation speed when a system control (IC304) controls driving transistors (Q404 through Q407). IC304 22pin 23pin 24pin 25pin Signal line PM1 PM2 PM3 PM4 State L L H H L H H L Forward rotation H H L L H L L H Reverse rotation UP-895/(E) 4-9
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4-9
UP-895/(E)
Rear DIP switch (S300)
IC304-66, 69pin
Function
IC304-66, 69pin:SWDATA
SWSEL[3-0]
L (Default)
H
0
1
INTERRUPT
ON
OFF
1
2
POST FEED
ON
OFF
2
3
ASPECT
4:3
1:1
3
4
MEMORY
FRAME
FIELD
4
5
DIRECTION
NORMAL
REVERS
5
6
SCAN1
WIDE1
WIDE 2
6
7
SCAN2
_
NORMAL
7
8
THRUE/EE
THRUE
EE
8
9
AGC
OFF
ON
9
0
RESERVED
_
_
10
!-
INPUT
B&W
COLOR
4-4-3.
Platen Motor Control
A stepping motor for platen driving controls the forward and reverse rotation and rotation speed when a
system control (IC304) controls driving transistors (Q404 through Q407).
IC304
Signal line
State
22pin
PM1
L
L
H
H
23pin
PM2
H
H
L
L
24pin
PM3
L
H
H
L
25pin
PM4
H
L
L
H
Forward rotation
Reverse rotation