HP LaserJet Pro 300 Service Manual - Page 144
Duplexer PCA diagram, Solve problems
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ENWW 7 6 5 4 3 2 1 +3.3VB +24VB2 +3.3VB 1 R811 3.9K,0.063W 2 +3.3VB 1 R812 820,0.063W 2 +3.3VA 12 C813 8 0.01U,50V/NOTMNT 1 R813 9 4.7K,0.1W 2 J150 1 J10P R814 1 2 1K,0.1W MAINTH R815 1 2 (CPU-37p) 1K,0.063W 12 C812 J150 2 J10P 0.1U,25V 12 C107 0.1U,25V 21 3 IC3 V 14 LM339EDT +3.3VD 47U,35V/NOTMNT R828 2 1 2K,0.063W FSRD (CPU-71p) R816 1 2 100,0.063W J151 1 J18P J151 2 J18P J151 3 J18P +3.3VA C68 J151 4 J18P J151 5 J18P R51 22K,0.063W C71 2 1 12 2 1 12 12 C70 C119 10U,6.3V 0.1U,25V/NOTMNT +3.3VB 2 31 Q10 12 RTR030P02 R2 100K,0.063W 1 2 R45 1K,0.1W/NOTMNT 12 C121 100P,50V 1 J153 1 J4P J153 2 J4P J153 3 J4P J153 4 J4P VS1-7134004 B4B-PH-KBL-H(LF) 2 R1501 51K,0.1W 12 C102 0.1U,25V R1502 1 2 ENVTEMP F (ASIC-43p) 3.3K,0.063W C103 0.1U,25V 12 R1503 1 2 3.3K,0.063W 12 ENVHUM (ASIC-42p) C104 0.1U,25V > E 1 R821 6.8K,0.063W R822 2K,0.063W 1 2 +3.3VD 0.1U,25V/NOTMNT J151 6 J18P ASICOFF VCTRLOFF (CPU-44p) (CPU-72p) J154 1 J2P +24VA J152 J152 6 J6P 5 J6P +24VA 12 12 2 C824 0.1U,25V/NOTMNT C870 J154 2 J2P Q11 2 3 DEVSL (ASIC-68p) J152 4 J6P DUPSWBKCL (ASIC-35p) 12 8 J150 3 J10P +3.3VA 1 2 R823 4.7K,0.1W C823 0.01U,50V R824 1 2 1K,0.1W SUBTH R825 1 2 5 V 7 6 IC831 4 LM393EDT 0.1U,25V SUPRT (A506) RLD (CPU-28p) R827 2 (A506) +3.3VB 1 J151 8 J18P 7 J18P R197 22K,0.063W J151 2 R66 1 2 100,0.063W ZEROX 12 C58 1000P,50V (CPU-55p) 1 +24VB VS1-7171002 8-292131-2 2SD1866 > 2 D801 1SS355@ J152 3 J6P 1 2 +3.3VB R61 47K,0.1W D DUPFANON (CPU-24p) (Dup_unit Detect) 12 J150 4 J10P (CPU-38p) 10K,0.063W C822 0.1U,25V FSRPRSS 2.7K,0.1W 1 R826 1 2 150,0.063W FSRRLD1 J151 9 J18P 1 J152 2 J6P DUPSWBKSL (ASIC-32p) J150 5 J10P +3.3VB R141 1 +3.3VB 3 IC3 10 V 13 11 J151 10 J18P FSRRLD2 (A506) 2 +3.3VB R202 22K,0.1W 1 1.3K,0.063W +3.3VB R98 1.2K,0.063W 21 12 LM339EDT +3.3VA R134 1 J152 1 J6P VS1-7327006 R201 1 2 1K,0.1W DUPFANLK C66 (ASIC-36p) 21 2 1 J150 6 J10P R70 22K,0.063W 2 R68 2 1 1K,0.063W PFULLS (CPU-100p) (CPU-2p) J151 11 J18P 22K,0.063W R131 2 1 1K,0.063W C73 PWRSWON (CPU-66p) 55447-0670 1000P,50V/NOTMNT C 12 12 2 J150 7 J10P +3.3VB C44 0.1U,25V J151 12 J18P J151 13 J18P PSREM24V (ASIC-52p) (100V/200V Detect) 1000P,50V/NOTMNT +24VA (CHK24V) J155 1 J6P (CHKGND) 2 J6P J155 > 1 +3.3VB J151 14 J18P J155 3 J6P R188 30K,0.063W 2 R176 +24VA J155 4 J6P J150 8 J10P 2 1 1K,0.063W POUTS (CPU-1p) J151 15 J18P +3.3VB J155 5 J6P 1 12 R700 12 21 C51 1000P,50V/NOTMNT +3.3VB C72 22K,0.063W J155 6 J6P 0.1U,50V/NOTMNT OPTPS R701 2 B (CPU-16p) 1 2 1K,0.063W 21 J150 9 J10P R190 22K,0.063W 2 R191 2 1 1K,0.063W FSRPRSS 1 J151 16 J18P C67 22U,50V/NOTMNT C700 1000P,50V/NOTMNT 1 +3.3VB R703 47K,0.063W VS1-7171006 8-292131-6 > 12 2 C56 1000P,50V/NOTMNT +24VS (CPU-15p) OPTPKSL J151 17 J18P +3.3VB HVT 1 J150 10 J10P R192 22K,0.063W 2 R193 2 1 1K,0.063W C57 100P,50V 12 LOOPS (ASIC-77p) J151 18 J18P VS1-7145018 3-292207-8 CP900 1 check Zebra pattern JNT4 1J 2 R903 0,1AW/NOTMNT 2 1 5: FSR, LVT, DUP , OPT, ENV, DEVSL A > for HVT VS1-7145010 3-292207-0 > 120 Chapter 2 Solve problems Duplexer PCA diagram Figure 2-14 Duplexer PCA diagram CD1-7