HP LaserJet M1120 Service Manual - Page 165

Problem-solving diagrams 149 ENWW 11 13 15 17 Formatter 12 Fuser heater Fuser sleeve unit Thermistor 1 1 12 TH1 2 H1 2 1 J1011 TP1 Thermal fuse 2 FSRTH GND 12 J702 Fuser delivery sensor PS701 123 Media sensor PCA Media width sensor PS702 123 J701 5 4 3 2 1 Fuser unit Pickup solenoid SL1 SL 12 Top of page sensor PS751 J751 1 2 3 123 Top of page sensor PCA 10 12 14 16 18 8 6 4 2 9 7 5 3 1 12 123 1 2 3 4 5 6 7 8 9 18 16 14 12 10 11 17 15 13 J531 GND /VDO2 VDO2 GND VDO1 /VDO1 GND /BDO /RSTO SC SCLK +5V_R GND GND GND +3.3R +3.3R +3.3R J532 GND +24FMTR Interlock switch SW501 1 2 12 J101 AC H AC N Power switch SW101 1 2 12345 J552 FSRTH GND /PWSNS /POSNS +3.3R J581 TAGIN 1 TAGOUT 2 J571 GND GND GND +24P2 +24P2 +24P2 +5R ACC DEC /MTRPWM MFG J542 GND +5V /BDIR GND(V) /VDO2 VDO2 GND(V) VDO1 /VDO1 GND(V) CNT2 CNT1 CNT0 10 12 10 8 6 4 2 123 J562 SL +24P1 J551 GND /PISNS +3.3R Engine Controller PCA 8 6 4 2 12 11 13 9 7 5 3 1 11 9 7 5 3 1 13 11 9 7 5 3 1 12 10 8 6 4 2 Circuit diagram Figure 6-10 Circuit diagram +24P2 MTRPWM +24P2 1 ACC 2 DEC 3 GND 4 J3 21 1 TAGIN 2 TAGOUT J901 11 10 9 8 7 6 5 4 3 2 1 J903 Main motor M1 M 12 J902 12 Main motor rotational count sensor PS901 123 Motor Drive PCA J801 BD sensor Laser Drive PCA 1234 M2 M 1234 J1 Scanner motor Laser/ Scanner unit