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Manual
Each sensor is described below.
1. Front and rear paper end sensors
Detection form:
Photo interrupter
output form:
Open collector (pulled up to 10
resistance)
Input circuit:
CR filter circuit (10
and 39
Logical:
Paper present: LOW
Paper out: HIGH
2. Top paper end sensor (to
the TOF position)
form:
output form:
Cl Input circuit:
Logical:
3. Paper jam sensor
Detection form:
c1 output form:
Input
Logical:
Supplement:
4. Tractor select sensor
Detection
Input circuit:
Logical:
5. Pull tractor sensor
Detection form:
Input
Logical:
6. Cover open sensor
Detection
Input
Logical:
Photo reflector
Open collector
CR filter circuit (10
and 39
Paper
LOW
Paper out: HIGH
Magnetic transistor
Rectangle wave (1 channel, TTL level)
Resistance for latch up prevention (10
Paper feed: Level changes continuously.
Paper jam: Level remains the same.
The magnetic transistor is attached to the tension roller on the paper tension
unit.
Micro mechanical switch
Resistance for latch up prevention (10
)
Pulled up to 390 resistance
Front tractor: LOW (closed)
Rear tractor: HIGH (open)
Micro mechanical switch
Resistance for latch up prevention (10
Pulled up to 390 resistance
Pull tractor installed: LOW (closed)
Pull tractor not installed: HIGH (open)
Micro mechanical switch
CR filter
(10
and 0.01
Pulled up to 390 resistance
Cover closed: LOW
Cover open: HIGH
7.
Carnage encoder sensor
Detection form:
LED and photo diode
Input
Rectangle wave (2-phase,
level)
CR filter
(10
and 390
Pulled up to 10
resistance
Transaction:
The carriage encoder outputs two pulses (A or B) to the gate array and the
gate array tells the CPU which signal it receives.
Rev.
2-23
Содержание C117001-N - DFX 5000+ B/W Dot-matrix Printer
Страница 1: ...EPSON TERM NAL PR DFX 5000 NTER SERVICE MANUAL EPSON ...
Страница 152: ...DFX 5000 Service Manual Troubleshooting Table 5 5 C117 PSB PSE Board Assembly Component Repair continued Rev A 5 15 ...
Страница 153: ...Ttvublestmting mx 60 Serv ce Ahmu8J Table 5 5 C117 PSBIPSE Board Assembly Component Repair continued 6 16 Rev A ...
Страница 155: ...Troubleshooting DlW50 Service Wnual Table 5 6 C117 MAIN Board Assembly Component Repair continued u 5 18 Rev A ...
Страница 158: ...DFX 5000 Service Manual Troubleshooting Table 5 6 C117 MAIN Board Assembly Component Repair continued Rev A S 21 ...
Страница 159: ...Troubleshooting DF 50tM Service Manual Table 5 6 C117 MAIN Board Assembly Component Repair continued k f L J s 22 Rev A ...
Страница 169: ...6 4 Rev A ...
Страница 170: ...DFX 5000 Sewice Manual Maintenance and Lubrication In Figure 6 4 Lubrication and Adhesive Diagram 3 Rev A S 5 ...
Страница 180: ...DFX 5000 Service Manual Appendix O I 1 T I I J I Figure A 3 C117 PSB Board Assembly Circuit Diagram Rev A A 1 1 ...
Страница 186: ...EPSON ...