Brother International HL 1850 Service Manual - Page 259

Appendix 10. Network Board PCB Circuit Diagram, HL-1850/1870N 5 T7 I 9 10 11 12 NI A AM79C973AKC PI PCI +3V0 VDD VSS 16 C40 CHI C4 CB C26 114 A 2 OV 20 23 29 3S By 48 ­ 1311,13 6 VDD6 7 VDDS 86 VDD9 101 VDD8 , 124 d 136 VITI: S ' 5 VSS VSS 9 VSS V55 VSS 130 VSS 150 VSSB 3 9 VSSB VSS8 VSSB 2 VSSB VSSB 3 104 . 5 11_1111 0 +39 FOR .1 T T T T T T 117 C6 C37 C36 112 C7 1 1 1 104 X6 1 1 1_ FOR .1 TTTTTT 0+34 cov C30 C30 C22 C10 C5 C39 125 CIS C9 113 104 210 _L111111111 °+3V 53 56 13 1111113 4. 1 VDD:PCI , 26 1 VSSB VSSB VSSB FOR 01 T T T T TIT T TT cm, 2 74 By 77 9 ADOA AD4A36 ADS $75 A5"34 AD7K3 AD111 , 2 AD9X3 , ADIOK,0 ADIIX3. AD12* AADDI3I4KA286.79 ADIS§ss ADISK, C23 0,10- 1 V L2 1-3VC,- 1B7u1 3. 7 1111113 51 45 D PCI S PC 1" VDIMI VDD_PCI ,! A VAUXDET DVDDCO ! ADOO ADOI . ADO2 . ADD3 4 AD04 47 ADDS ADO6 4 ADO7 4 ADD8 4 ADO9 3 DIO 3 3 12 13 A11 ,3 ADIS ADIS VSSB VSSB VSSB VSSB VSSB VSSB VSSB DVSSD DVSSP DVSSX DVDDD 08 DVDDP DVDDA C27 103 ,C3 10 124 103 L4 2 81_011/.3005 LS BLM1IP3002 1' 2 BLM]IP3005 AVCC C20 100u LI 81_011/.3005 C19 C11 104 104 3V C3 00u DV OV B AM79C973AKC 281)00 2-- 281701 28D02 BBL- 28003 67 281)04 28D05 BS EBDOG 22-- 281)07 73 28DA08 12-- 28DA09 76 28DA10 28DAII 22-- CODA12 28DAI3 28DA14 22-- 28DAIS R4 202 RX+ 15 102 49.9 IR RA TX+ 11021 C28 i i II 21 Re 49 .9 I0 , 32_____ AVCC TX TI HI081 RD+ 3 RDC r i 2 RD, 15TD+ 14TDCT ISTD- C33 C34 104 T T 104 RX 5 CM R11 RX- cm7i2 512 -10 P2 RJ-45 3 RX R13 SNM SNM 6 RX R14 750 AD17§, AD17 !i-- EBUA 03,500 ADISK i€ ADISK,, 9 ADIS ADIS DVDDT 1.1 tl_ C29 22 28UA-28A01 EBUAEBA02 C41 2KV IB C44 202 11021 AD20K is AD20 103 2-- 28UA-28A03 O 0 AD2I AD22 $53 AD23 AD24§, AD2I 4 AD22 DVDDRX 16 2 C31 159 Ar t 03 cf. DEL- 28UA28A04 EBUAEBAOS 70 28UA28ADS 11-- EBUA:EBA07 OV RI5 +3V FG 0 FG FG AD25K4 AD2S AD27K,48 AD2BK, "D29 6 AD30§6 AD3IX CE120e,' 0321A- AD25 IS AD27 53 "111:: AD30 AD3I 42 C/820 30 CAM- 22 WigE DWADU2 IRDYD PAR ,2,! PERRD .. MEDD DEVSEL Cm -02F) FRAME GE -02F) INTA Cm -02F) IRBY 10 -02F) PAR Cm 02F) PERK Cm -02G) REO 04 02G) RI +3V +320- 090 10001 103 60 28CLK 12 EAR EELS 128 EESK/LEDI 126 EEDI/LEDO 121 LI1-XTAL EEDO/LED3 120 103 XTALI LED2 12S 103 RIS 11031 .2 -93C4SADFJ CS SK DI 4 Do VCC / _l_ C42 GN' D' 5 ]r 104 Nc--E 3V cOY FC OV L6 0000 0 140 R000 FG 0322§ CE123A pcicLA 42 PC'GNI):2 IDSEL >, PCI_RS7›- R20 E :, 1S C/822 160 CAEN " CLK 145,,,, 1 IDSEL 1431 RST SERR) 26 ETD.) TRU 2B SERR Cr -02G) STOP Cm - 02G1 TRDY Cr -02G) 116 10001 R2 000 R6 R3 105 102 XTAL2 NC -22 NC NC 91800 107 AS EDUE--!! LD2 ,k SPE RIB +3V 151 LD I LIN FC L7 R000 O C47 R000 FG RWU 133 123 ]X l7 SDI+ -ERNE D-22 mon o-51 151 FG 43V0 141 PG 114 SDI LD3 DEVSEL*:: FRAME i INTA (21 IRDYKss DaSEL C. -042) FRAME 04 -04E) INTA Cr -042) IREY Cr -042) PRE Dal NUMI Dim 134-07CK 132- TDI 1.25- TMS TDD 137 ACT 151 PAR K64 PAR Cm 042) PCPIREEROR