HP 8550 Service Manual - Page 507

E203 The scanner motor driver PCB or the scanner motor is faulty. This error occurs when the scanner home position is detected during back-scanning (not requiring return to the scanner home position sensor). It can also occur if a deviation occurs during back-scanning (returning to the scanner home position sensor). Cause Step 1 Scanner motor 2 driver PCB/ Scanner motor Reader controller PCB Checks Yes/No Action Does the scanner move until NO See "The scanner motor fails to "E203" is indicated? move forward or to move in reverse." on page 525. Does the voltage between YES connectors J303-B1 (RST) on the scanner motor driver PCB and J303-B4 (GND) and between connectors J303-B2 (MOVE) and NO J303-B4 (GND) change from 5 to 0V? Replace the scanner motor driver PCB. If the problem cannot be corrected, replace the scanner motor. Replace the reader controller PCB. E211, E215 E211:The scanning lamp (fluorescent lamp) thermistor has an open circuit. This error occurs when the temperature does not reach 10° C after supplying the scanning lamp heater with power for two minutes (starting at 0° C or less). It can also occur when the temperature drops to 0° C or less during temperature control. E215:The scanning lamp (fluorescent lamp) thermistor has a short circuit. This error occurs when the scanning lamp thermistor detects 170° C or more when the fluorescent lamp ON signal (FLON) is off (including power-on). Cause Lamp heater Step 1 2 Checks Yes/No Action Disconnect connector J1610 of NO the reader controller PCB, and measure the resistance between YES connectors J1610-5 (GND) and J1610-6 (FL_TH) on the harness side. Is it 100 Ω or less or 100 KΩ or more? The reader controller PCB is faulty. Go to step 4. Go to step 2. Disconnect connector J2039 of YES the lamp heater, and measure the resistance between connectors J2039-2 (GND) and J2039-3 (FL_TH). Is it 100 Ω or less or 100 K Ω or more? Replace the lamp heater. EN Copy module troubleshooting 505