HP LaserJet Pro 100 Service Manual - Page 105
General circuit diagram,
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Tools for troubleshooting 87 ENWW Low-voltage Power Supply Ass'y NEUTRAL1 (W) LIVE1 (BK) SOLD1 SOLD2 J204 J206 21 6 Inlet J1001 5 100V H801A 1 2 200V H801B 1 2 1 2 J2A 1 2 J2B TB2A TP1A TB2B TP1B 1 TP 2 1 TP 2 TB1A TB1B FU LIVE(W) FU NEUTRAL(W) FU LIVE(BK) FU NEUTRAL(BK) 321 J302A 321 J302B 321 J201 FUSER POWER SUPPLY PCA ASS'Y J303 123 J901 1234567 J401 J402 FU LIVE(BK) FU NEUTRAL(W) 7654321 J203 +24R FEEDSLD +3.3V SGND SL2 SL SR6 J606 321 SGND RLD+ RLDFSRD+ FSRDFREQSNS LVT100V /REM3V V PWSV +3.3R +3.3R SGND SGND FEEDSLD +3.3T SGND PISNS +24R (R) PGND (BL) 21 J205 12 21 J140 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 J108 J103 11 4321 J152 7654321 J119 654321 J107 321 J106 4 LOOPSNS SGND +3.3T J7D J7DH 321 SR3 J601 J7L 4 321 4321 SGND MAINTH SGND(BL) +3.3T(R) PWSNS(GY) POUTSNS(Y) N.C. DVSS(R) VIN(V) SGND(Y) +3.3T(BL) FSRPRESNS(GY) N.C. J8004 J8001 J8002 J8003 J9001 J9002 J9003 J9004 J9005 J9006 SR2 SR1 2 1 SR4 SR5 TH801 21 J118 Density/ITBTOP Sensor J611 3 ITB Ass'y ITBTOPPWM DNSP DNSGAIN1 DNSGAIN0 DNSPWM ITBTOPSNS DNSS +24V SGND SW1 SOLD10 SOLD9 DOORSNS_R SGND E-label SOLD8 SOLD7 11 Automatic document feed J993 Engine Controller Ass'y J101A J102A 123456 12345 11 SGND 1 10 /VDI 2 9 VDI 3 8 SGND 4 7 /BDO 5 6 SGND 6 5 /TOP 7 4 SCLK 8 3 SC 9 2 /CCRT 10 1 SLPWUP 11 Formatter 21 J4 4321 J6 11 J3 J992 11 J994 22 J990 11 11 1 10 2 93 84 75 66 57 48 39 2 10 1 11 22 1 21 2 20 3 19 4 18 5 17 6 16 7 15 8 14 9 1310 1211 11 12 1013 9 14 8 15 7 16 6 17 5 18 4 19 3 20 2 21 1 22 11 11 1 10 2 93 84 75 66 57 48 39 2 10 1 11 Scanner J995 22 J104 987654321 J991 21 J128 987654321 J130 11 Control panel 654321 J112 87654321 J110 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 J109 2 11 /BDI 1 10 +3.3T 2 9 SGND 3 8 LDPWM 4 7 SGND 5 6 LDCNT0 6 5 LDCNT1 7 4 SGND 8 3 VDO 9 2 /VDO 10 1 SGND 11 J8D J8DH J8L 21 21 CVSS VIN PGND /SCNDEC /SCNACC +24V PWSW +24V /MAINMFG /MAINMDEC /MAINMACC MAINMFR PGND PGND +24B +24B ROTHPSNS SGND +3.3T J706 E-label SOLD4 SOLD3 Power Switch PCA 3 2 1 10 9 8 7 6 5 4 3 2 1 SR7 J607 4321 4321 4321 M1 M J701 M2 M J702 ROTMB ROTMBN ROTMA ROTMAN FSRMB FSRMBN FSRMA FSRMAN FEEDMBN FEEDMB FEEDMAN FEEDMA TR2ICLSLD +24V J115D J115DH 21 J115L M3 M J703 SL1 SL 21 4321 87654321 M4 M J704 87654321 J705 M5 M J802 Laser Driver PCA J801 11 1 D Scanner Ass'y C +24B +24B GNDB GNDB MAINMFR /MAINMACC /MAINMDEC /MAINMFG B A General circuit diagram Figure 2-5 General circuit diagram