HP LaserJet Pro 400 Service Manual - Page 157
HVT/Toner EMP diagram,
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HVT/Toner EMP diagram Figure 2-12 HVT/Toner EMP diagram 7 6 +3.3VB J130 1 J23P J130 2 J23P J130 3 J23P VDOEN Q7 3 2 1 R241 330,0.063W D1 2 1 RT1N436M-@111 CCRT (CPU-73p) +3.3VB 1SS388(F)/NOTMNT +3.3VB R44 R43 100,0.063W 2.2K,0.063W SCO (ASIC-70p) R114 1K,0.063W 12 SCI C16 (ASIC-71p) 100P,50V J130 4 J23P J130 5 J23P J130 6 J23P R42 D3 1SS388(F)/NOTMNT 2 1 +3.3VB +3.3VB R41 100,0.1W 33K,0.063W D2 2 1 1SS388(F)/NOTMNT C17 12 TOP (ASIC-74p) 68P,50V/NOTMNT 12 SCLK (ASIC-72p) C15 100P,50V J130 7 J23P J130 8 J23P J130 9 J23P J130 10 J23P J130 11 J23P J130 12 J23P J130 J130 13 J23P 14 J23P J130 15 J23P J130 16 J23P J130 17 J23P J130 18 J23P J130 19 J23P J130 20 J23P J130 21 J23P J130 22 J23P J130 23 J23P C21 12 BDO +3.3VRTC (ASIC-73p) +3.3VA 68P,50V/NOTMNT JP1 12 C120 2 1 0.1U,25V/NOTMNT R80 100,0.063W C78 100P,50V/NOTMNT RK73Z1JT/NOTMNT R136 1K,0.063W R24 33K,0.063W 12 WAKEENG C14 0.01U,50V WAKEVC VDO4 12 (ASIC-83p) VDO4 (ASIC-84p) (ASIC-85p) (ASIC-86p) VDO3 VDO3 (CPU-74p) (CPU-76p) (ASIC-87p) (ASIC-88p) VDO2 VDO2 VDO1 VDO1 (ASIC-89p) (ASIC-90p) J131 1 J25P J131 2 J25P J131 3 J25P J131 4 J25P J131 5 J25P J131 6 J25P J131 7 J25P J131 8 J25P J131 9 J25P J131 10 J25P J131 11 J25P J131 12 J25P J131 13 J25P J131 14 J25P J131 15 J25P J131 16 J25P J131 17 J25P J131 18 J25P VS1-6849023 9615S-23A-PP-A > +24VA J132 1 J4P 12 J132 2 J4P J132 3 J4P C28 2200P,50V/NOTMNT SCNACC SCNDEC (ASIC-124p) (ASIC-123p) 12 12 J132 4 J4P VS1-7145004 2-292207-4 C27 C26 47P,50V/NOTMNT 47P,50V/NOTMNT > J131 19 J25P J131 20 J25P J131 21 J25P J131 22 J25P J131 23 J25P J131 24 J25P J131 25 J25P VS1-6849025 9615S-25A-PP-A R15 12 1 2 12 12 12 12 12 10K,0.063W 5 +3.3VB 2 1 R58 10K,0.063W/NOTMNT R57 1 2 100,0.063W BDI (ASIC-99p) 100P,50V/NOTMNT 12 C2 LDCTRL10 C65 100P,50V LDCTRL11 C84 100P,50V VDO1O VDO1O (ASIC-100p) (ASIC-101p) (ASIC-92p) (ASIC-93p) +3.3VB VDO2 VDO2 LDCTRL21 C105 100P,50V (ASIC-102p) LDCTRL20 C108 (ASIC-103p) 100P,50V +3.3VB 12 12 VDO3 VDO3 LDCTRL31 C112 100P,50V LDCTRL30 C113 100P,50V (ASIC-104p) (ASIC-105p) +3.3VB LDCTRL40 C114 100P,50V LDCTRL41 C122 100P,50V VDO4 (ASIC-106p) (ASIC-107p) 4 3 2 1 J133 J133 J133 J133 J133 J133 29 J29P 28 J29P 27 J29P 26 J29P 25 J29P 24 J29P J133 23 J29P J133 22 J29P J133 21 J29P J133 20 J29P J133 19 J29P J133 18 J29P J133 17 J29P J133 16 J29P J133 15 J29P J133 14 J29P J133 13 J29P J133 12 J29P +24VS J133 9 J29P C53 R53 TNRRSPWM 2 1 100,0.063W/NOTMNT (CPU-4p) HVDATA1 (ASIC-117p) 21 100P,50V/NOTMNT C54 HVDALD (ASIC-118p) 21 100P,50V/NOTMNT HVDACLK C59 (ASIC-116p) 21 100P,50V C55 HVOUTEN (ASIC-119p) 21 100P,50V/NOTMNT C29 TR2CLK (ASIC-122p) 21 100P,50V/NOTMNT TR2PWM C25 (ASIC-121p) 21 100P,50V/NOTMNT TNRRSCLK C24 (ASIC-120p) 21 100P,50V/NOTMNT DA5 1 3 2 +3.3VB J133 8 J29P J133 7 J29P J133 6 J29P J133 5 J29P J133 4 J29P J133 J133 3 J29P 2 J29P RB715F/NOTMNT R122 1 2 3.3K,0.063W R124 1 2 3.3K,0.063W DA4 +3.3VB 1 3 2 RB715F/NOTMNT R126 1 2 3.3K,0.063W R118 1 2 3.3K,0.063W R119 1 2 3.3K,0.063W DA6 1 3 2 +3.3VB RB715F R107 1 2 3.3K,0.063W 12 12 12 12 12 TNR1 (CPU-43p) C62 0.01U,50V TNR2 C1 (CPU-42p) 0.01U,50V J133 1 J29P TNR3 C64 (CPU-41p) 0.01U,50V TNR4 (CPU-39p) C61 0.01U,50V TR1S C60 0.01U,50V TR2S (ASIC-41p) (ASIC-40p) C22 21 100P,50V/NOTMNT TGSD (ASIC-110p) +3.3VB R216 F 1 2 1K,0.1W R135 2 1 (ASIC-111p) TGRD C20 100,0.063W 21 100P,50V/NOTMNT 12 C91 220P,50V C19 TGEN1 21 100P,50V/NOTMNT (ASIC-112p) TGEN2 C18 21 100P,50V/NOTMNT (ASIC-113p) TGEN3 (ASIC-114p) C6 E 21 100P,50V/NOTMNT TGEN4 C5 21 100P,50V/NOTMNT (ASIC-115p) +24VB R23 24K,0.1W 1 2 R217 1 2 3.3K,0.1W 12 D RDOORS (CPU-12p) C30 0.01U,50V C 12 DA3 1 +3.3VB C52 > R130 B J133 11 J29P 1 2 ICLRSNS (ASIC-39p) 3.3K,0.063W C23 12 0.01U,50V J133 10 J29P R238 1 2 3.3K,0.063W ICLBSNS (ASIC-38p) 12 VS1-6849029 9615S-29A-PP-A C115 0.01U,50V 3: VIF, LSR, SCN, HVT,TG VDO4 +3.3VB A > CD1-5 ENWW Troubleshooting tools 131