Epson DFX-9000 - Troubleshooting; Test Reference Values; Motor Test Reference; Sensor and Switch Reference

Epson DFX 9000 Revision B
Troubleshooting Troubleshooting 104
3.3 Troubleshooting
3.3.1 Test reference values
3.3.1.1 Motor test reference
The table below lists the resistance values for the motors on the printer.
3.3.1.2 Sensor and switch reference
Table 3-3. Motor resistance values
Motor Coil resistance
SP MOTOR 0.88 ~ 1.08 ohm
LF MOTOR 0.5 ~ 0.6 ohm
O/C MOTOR 72 ~ 88 ohm
HCPP Motor 145 ~ 165 ohm
RF Motor 13.5 ~ 16.5 ohm
APTC Motor 365 ~ 446 ohm
Table 3-4. Sensors and switches test reference
Sensor Type Logical state
FTRPE Photo-interrupt Low = paper present
RTRPE Photo-interrupt Low = paper present
OCS1 / OCS2 Photo-interrupt Low = closed
TPE Photo-reflective High = paper present
COS Microswitch Low = cover closed
INLK SW Microswitch Low = cover closed
LES Photo-interrupt Low = home position
APTCHP Photo-interrupt Low = home position
TOFL Photo-reflective High = paper present
TOFR Photo-reflective High = paper present
RFS Photo-interrupt L-H-L, etc. = ribbon feeding
(spindle rotating)
RMS Microswitch Low = ribbon installed
PTRM Microswitch Low - tractor unit installed