Service manual

PIN No. Signal name IN/OUT Connected to Description
204 PORTOUT20 OUT (Not used)
205 OP-LATCH OUT Tr array IC Latch signal for operation circuit. Data latch at LOW.
206 MRPS2 OUT Tr array IC Mirror speed control signal. Mirror speed 2 at LOW.
207 MRPS1 OUT Tr array IC Mirror speed control signal. Mirror speed 1 at LOW.
208 PORTOUT16 OUT (Not used)
209 PORTOUT15 OUT (Not used)
210 3.3V Power
211 TC OUT Tr array IC Transfer charger control signal. ON at HIGH.
212 GRIDL OUT Tr array IC Main charger grid control signal. ON at HIGH.
213 GND Power
214 MC OUT Tr array IC Main charger control signal. ON at HIGH.
215 BIASL OUT Tr array IC DV bias voltage control signal. ON at HIGH.
216 BIASH OUT Tr array IC DV bias voltage control signal. ON at HIGH.
217 BIAS OUT Tr array IC DV bias output control signal. ON at HIGH.
218 CL OUT Tr array IC Copy lamp control signal. ON at HIGH.
219 VFMCNT OUT Tr array IC
Ventilation fan rotating speed control signal. Low speed
at HIGH, high speed at LOW.
220 VFM OUT Tr array IC Ventilation fan control signal. Fan ON at HIGH.
221 LDEN OUT Tr array IC Laser circuit control signal. Laser circuit ON at HIGH.
222 PMD OUT Tr array IC Polygon motor control signal. Polygon motor ON at HIGH.
223 5V Power
224 MM OUT Tr array IC Main motor control signal. Main motor ON at HIGH.
225 MPFS OUT Tr array IC
Manual paper feed solenoid control signal. Multi paper
feed ON at HIGH.
226 GND Power
227 CPFS2 OUT Tr array IC
Second cassette paper feed solenoid control signal.
Second cassette paper feed at HIGH.
228 CPFS1 OUT Tr array IC
Cassette paper feed solenoid control signal. One-stage
cassette paper feed at HIGH.
229 TM OUT Tr array IC Toner motor drive output (+)
230 TM_ OUT Tr array IC Toner motor drive output (–)
231 CPUD15 IN/OUT CPU CPU data bus
232 CPUD14 IN/OUT CPU CPU data bus
233 CPUD13 IN/OUT CPU CPU data bus
234 CPUD12 IN/OUT CPU CPU data bus
235 CPUD11 IN/OUT CPU CPU data bus
236 5V Power
237 CPUD10 IN/OUT CPU CPU data bus
238 CPUD9 IN/OUT CPU CPU data bus
239 GND Power
240 CPUD8 IN/OUT CPU CPU data bus
241 CPUD7 IN/OUT CPU CPU data bus
242 CPUD6 IN/OUT CPU CPU data bus
243 CPUD5 IN/OUT CPU CPU data bus
244 CPUD4 IN/OUT CPU CPU data bus
245 CPUD3 IN/OUT CPU CPU data bus
246 CPUD2 IN/OUT CPU CPU data bus
247 CPUD1 IN/OUT CPU CPU data bus
248 CPUD0 IN/OUT CPU CPU data bus
249 3.3V Power
AL-1000/1010
12-12