Olympus OEP-3, Service Manual

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OEP-3 V1 (UC)
6. Head position FG sensor
Route: SE-548 to SE-539 to PRT-13
TP: TP513/PRT-13 board
Function: Detects the number of rotations in a head motor.
Level: Rectangular wave output
7. Paper feed timing sensor
Route: SE-550 to SE-539 to PRT-13
TP: TP508/PRT-13 board
Function: Discriminates whether print paper was fed properly or whether print paper is not jammed at a
paper feed port in the standby state.
Level: H Print paper exists at a paper feed port.
L Print paper does not exist at a paper feed port.
8. Delivery timing sensor
Route: SE-551 to SE-539 to PRT-13
TP: TP509/PRT-13 board
Function: Discriminates the mechanical timing during delivery operation and whether print paper is not
jammed at a delivery port.
Level: H Print paper exists at a delivery port.
L Print paper does not exist at a delivery port.
HED_POS_FG
SE-539
PRT-13
17P
IC5
14P
CN401
17P
CN150
11P
10P
9P
CN102
SE-548
3P
2P
1P
CN9
(3/7)
IC4
SN74LV14ANSR
GND
+5V
R158
150
PH13
RPI-352
NM
C25
0.01uF
NM
C26
0.01uF
6 5
4
3
2
1
+5V
R530
10k
LOAD_TMG
10P
IC9
1P
12P
PRT-13
CN101
CN401
2P 11P 19P
CN11
3P
CN150
SE-550
12P
SE-539
10P
NM
C29
0.01uF
PH15
RPI-5100
R155
150
GND
+5V
(3/9) IC406
SN74LV541ANSR
4
3
2
1
14 6
+5V
R515
10k
EJCT_TMG
IC9
CN106 CN12
2P 11P
1P
PRT-13
CN150
SE-539
20P 2P
CN401
10P
SE-551
3P 3P
1P
NM
C31
0.01uF
PH16
GP1S54
NM
C32
0.01uF
R167
150
GND
+5V
(4/9)
IC406
SN74LV541ANSR
4
3
2
1
13 7
+5V
R516
10k