Toshiba DP1600 Service Handbook page 169

C73 RADF EEPROM initialization error
1. Check if any conductor pattern (IC12 and surrounding area) on the RADF PWA is open- or
short-circuited.
2. Replace the RADF PWA.
C74 RADF SB sensor adjustment error
1. Check there are any foreign obstacles between the sensor and the reflection mirror.
2. Check if the sensor or mirror is dirty.
3. Check if each connector between the RADF SB sensor and the RADF PWA (CN4) is discon-
nected.
4. Check if each connector between the RADF PWA and the scanner control PWA (CN6) is
disconnected.
5. Check if each connector between the scanner control PWA (CN4) and the main PWA (CN8)
is disconnected.
6. Check if each connector pin is removed or the harness is broken.
7. Check if any conductor pattern on the RADF, scanner control and main PWA is open- or
short-circuited.
8. Replace the RADF SB sensor.
9. Replace the RADF PWA.
10.Replace the scanner control PWA.
11.Replace the main PWA.
C81 RADF fan motor error
Is the motor working? (using the test mode 10, Output Test, CODE 298)
YES
Check for foreign obstacles on the blade and remove if any.
NO
1. Check if each connector between the RADF FAN motor and the RADF PWA (CN9) is discon-
nected.
2. Check if each connector between the RADF PWA and the scanner control PWA (CN6) is
disconnected.
3. Check if each connector between the scanner control PWA (CN4) and the main PWA (CN8)
is disconnected.
4. Check if each connector pin is removed or the harness is broken.
5. Check if any conductor pattern on the RADF, scanner control and main PWA is open- or
short-circuited.
6. Replace the RADF FAN motor sensor.
7. Replace the RADF PWA.
8. Replace the scanner control PWA.
9. Replace the main PWA.
December 2000 © TOSHIBA TEC 4 - 45 1600/2000/2500 TROUBLESHOOTING