Service manual

PIN No Signal code Input/output Operating
45 D4 Data input/output Data Bus
46 D5 Data input/output Data Bus
47 D6 Data input/output Data Bus
48 D7 Data input/output Data Bus
49 D8 Data input/output Data Bus
50 D9 Data input/output Data Bus
51 D10 Data input/output Data Bus
52 D11 Data input/output Data Bus
53 D-GND
54 D12 Data input/output Data Bus
55 D13 Data input/output Data Bus
56 D14 Data input/output Data Bus
57 D15 Data input/output Data Bus
58 5V
59 (OP-DATA) Output Data Signal for Operation Panel
60 NC-pull up
61 NC-pull up
62 NC-pull up
63 (OP-CLK) Output Clock for Operation Panel
64 /PWOFF Output Power Off
65 D-GND
66 NC-pull up
67 D-GND
68 D-GND
69 PSW Input Print switch input
70 KIN1 Input Key input 1
71 KIN2 Input Key input 2
72 TMCLK Timer output Clock for Toner Motor
73 /TMEN Output On-Off Control for Toner Motor
74 NC-pull up
75 PMCLK Timer output Clock for Polygon Motor
76 /PRSTART Output Printing Start Signal
77 /SCANSP Output Scaning Stop Signal
78 /SCANST Output Scaning Start Signal
79 HL OutputüiTimer outputüj On-Off Control for Heatrer Lamp
80 WDTOVF- Output Watchdog Timer
81 RES- Input Reset
82 Input pull up
83 Input pull up
84 5V
85 XTAL Clock
86 EXTAL Clock
87 D-GND
88 CPUCLK Output System Clock for G/A
89 5V
90 /AS Output pull up
91 /RD Output Read Signal
92 /HWR Output Write Signal (High Address)
93 /LWR Output Write Signal (Low Address)
AL-1000/1010
12-4