Canon LBP 2460 Service Manual - Page 303
GENERAL CIRCUIT DIAGRAM-3/3, Video controller PCB
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GENERAL CIRCUIT DIAGRAM-3/3 6 5 4 3 2 1 J1/2 J3 J4 J5 J11 J7 A1 VCC A2 LD1 B1 GND B2 LD0 1 GND 2 MD0 37 GND 38 GND 1 GND 2 MD0 37 GND 38 GND 1 GND 2 MD0 37 GND 38 GND 1 nRESET 23 WR1 2 GND 24 GND 1 GND 2 GND D Hard disk (option) Option controll interface board A3 LD3 B3 LD2 3 MD16 39 GND 3 MD16 39 GND 3 MD16 39 GND 3 D7 25 RO1 3 /TX A4 LD5 B4 LD4 4 MD1 40 nBCAS0 4 MD1 40 nBCAS0 4 MD1 40 nBCAS0 4 D8 26 GND 4 /CLK A5 LD7 B5 LD6 5 MD17 41 nBCAS2 5 MD17 41 nBCAS2 5 MD17 41 nBCAS2 5 D6 27 N.C. 5 /CLKN A6 LD9 B6 LD8 6 MD2 42 nBCAS3 6 MD2 42 nBCAS3 6 MD2 42 nBCAS3 6 D9 28 N.C. 6 /RX A7 LD11 B7 LD10 7 MD18 43 nBCAS1 7 MD18 43 nBCAS1 7 MD18 43 nBCAS1 7 D5 29 N.C. 7 N.C. A8 LD13 B8 LD12 8 MD3 44 nRAS0 8 MD3 44 nRAS2 8 MD3 44 nRAS4 8 D10 30 GND 8 /STROBE A9 LD15 B9 LD14 9 MD19 45 nRAS1 9 MD19 45 nRAS3 9 MD19 45 nRAS5 9 D4 31 nIDE_IRQ 9 N.C. A10 GND B10 GND 10 VCC 46 N.C. 10 VCC 46 N.C. 10 VCC 46 N.C. 10 D11 32 N.C. 10 N.C. A11 LD17 B11 LD16 11 N.C. 47 nBWE 11 N.C. 47 nBWE 11 N.C. 47 nBWE 11 D3 33 A3 11 /PDLV A12 LD19 B12 LD18 12 BMA0 48 N.C. 12 BMA0 48 N.C. 12 BMA0 48 N.C. 12 D12 34 N.C. 12 GND Optional RAM SIMM Optional RAM SIMM Optional RAM SIMM Optional ROM DIMM A13 LD21 B13 LD20 13 BMA1 49 MD8 13 BMA1 49 MD8 13 BMA1 49 MD8 13 D2 35 A2 13 /SPCHG A14 LD23 B14 LD22 14 BMA2 50 MD24 14 BMA2 50 MD24 14 BMA2 50 MD24 14 D13 36 A4 14 /PFED A15 LD25 B15 LD24 15 BMA3 51 MD9 15 BMA3 51 MD9 15 BMA3 51 MD9 15 D1 37 nIOCS40 15 /PRINT A16 LD27 B16 LD26 16 BMA4 52 MD25 16 BMA4 52 MD25 16 BMA4 52 MD25 16 D14 38 nIOCS41 16 /VSYNC A17 LD29 B17 LD28 17 BMA5 53 MD10 17 BMA5 53 MD10 17 BMA5 53 MD10 17 D0 39 nHDLED 17 RESET A18 LD31 B18 LD30 18 BMA6 54 MD26 18 BMA6 54 MD26 18 BMA6 54 MD26 18 D15 40 GND 18 N.C. A19 ROMA0O B19 ROMA0E A20 GND B20 VCC 19 BMA10 20 MD4 55 MD11 56 MD27 19 BMA10 20 MD4 55 MD11 56 MD27 19 BMA10 20 MD4 55 MD11 56 MD27 19 GND 20 N.C. 41 VCC 42 VCC 19 VCC 20 VCC C A21 LA5 B21 LA4 21 MD20 57 MD12 21 MD20 57 MD12 21 MD20 57 MD12 21 N.C. 43 GND A22 LA7 B22 LA6 22 MD5 58 MD28 22 MD5 58 MD28 22 MD5 58 MD28 22 GND 44 N.C. A23 LA9 B23 LA8 23 MD21 59 VCC 23 MD21 59 VCC 23 MD21 59 VCC A24 LA11 B24 LA10 24 MD6 60 MD29 24 MD6 60 MD29 24 MD6 60 MD29 A25 LA13 B25 LA12 25 MD22 61 MD13 25 MD22 61 MD13 25 MD22 61 MD13 A26 LA15 B26 LA14 26 MD7 62 MD30 26 MD7 62 MD30 26 MD7 62 MD30 A27 LA17 B27 LA16 27 MD23 63 MD14 27 MD23 63 MD14 27 MD23 63 MD14 A28 LA19 B28 LA18 28 BMA7 64 MD31 28 BMA7 64 MD31 28 BMA7 64 MD31 A29 LA21 A30 LA23 B29 LA20 B30 LA22 29 N.C. 30 VCC 65 MD15 66 N.C. 29 N.C. 30 VCC 65 MD15 66 N.C. 29 N.C. 30 VCC 65 MD15 66 N.C. J9/10 A31 GND B31 nSIMMWR A32 nROMSEL0 B32 nROMSEL1 A33 nROMSEL2 B33 nROMSEL3 A34 nIOWR0 B34 nROMOEE A35 nIOWR1 B35 nROMOEO A36 VCC B36 GND 31 BMA8 32 BMA9 33 nRAS1 34 nRAS0 35 GND 36 GND 67 N.C. 68 N.C. 69 N.C. 70 N.C. 71 N.C. 72 GND 31 BMA8 32 BMA9 33 nRAS3 34 nRAS2 35 GND 36 GND 67 N.C. 68 N.C. 69 N.C. 70 N.C. 71 N.C. 72 GND 31 BMA8 32 BMA9 33 nRAS5 34 nRAS4 35 GND 36 GND 67 N.C. 68 N.C. 69 N.C. 70 N.C. 71 N.C. 72 GND 1 VCC 26 GND 2 /INTR 27 /WAIT 3 /RESET 28 nW/R 4 /IOWR 29 /IORD 5 /IOCS 30 A23 6 N.C. 31 N.C. 7 GND 32 GND B Expansion interface board 8 D0 33 D1 Video controller PCB 9 D2 10 D4 34 D3 35 D5 11 D6 36 D7 J8 1 STROBE 2 D0 3 D1 4 D2 5 D3 6 D4 7 D5 8 D6 9 D7 10 ACK 11 BUSY 12 PERROR 13 SELECT 14 AUTFEED 15 N.C. 16 GND 17 GND 18 VCC 19 GND 20 GND 21 GND 22 GND 23 GND 24 GND 25 GND 26 GND 27 GND 28 GND 29 GND 30 GND 31 INIT 32 FAULT 33 N.C. 34 N.C. 35 N.C. 36 SELIN 12 D8 37 D9 A-1 GND A-2 GND A-3 VCC A-4 VCC A-5 VCC B-1 GND B-2 GND B-3 VCC B-4 VCC B-5 VCC C-1 /BD C-2 GND C-3 VCC C-4 VCC C-5 VCC 13 D10 14 D12 15 D14 16 GND 17 A2 38 D11 39 D13 40 D15 41 GND 42 A3 A-6 A-7 A-8 A-9 A-10 A-11 N.C. /SPCHG N.C. /CMD /STS /VSYNC B-6 B-7 B-8 B-9 B-10 B-11 N.C. /PFED N.C. /CBSY /SBSY /CPRDY C-6 C-7 C-8 C-9 C-10 C-11 N.C. /PDLV N.C. /CCLK /PCLK /PRNT 18 A4 19 A6 20 A8 21 A10 22 A12 43 A5 44 A7 45 A9 46 A11 47 A13 A-12 /VSREQ B-12 /RDY C-12 /PPRDY 23 A14 48 A15 A-13 A-14 A-15 N.C. /FPCS GND B-13 B-14 B-15 N.C. /FPO GND C-13 /FPCK C-14 /FPI C-15 GND 24 A16 25 VCC 49 A17 50 GND A J6 A-16 GND B-16 GND C-16 VDO To host computer J201 DC controller PCB A - 5