Canon LV-7545U, Service Manual

Page: 79 / 130

Part 4: Troubleshooting
4-10
70 PD17/D17/IRQ1 PW_IN0 PW365 Data input (reserve) I
71 VSS GND
72 PD16/D16/IRQ0 reserve
73 PD15/D15 DATA15 Data Bus 15 I/O
74 PD14/D14 DATA14 Data Bus 14 I/O
75 PD13/D13 DATA13 Data Bus 13 I/O
76 PD12/D12 DATA12 Data Bus 12 I/O
77 VCC 5V
78 PD11/D11 DATA11 Data Bus 11 I/O
79 VSS GND
80 PD10/D10 DATA10 Data Bus 10 I/O
81 PD9/D9 DATA9 Data Bus 9 I/O
82 PD8/D8 DATA8 Data Bus 8 I/O
83 PD7/D7 DATA7 Data Bus 7 I/O
84 PD6/D6 DATA6 Data Bus 6 I/O
85 VCC 5V
86 PD5/D5 DATA5 Data Bus 5 I/O
87 VSS GND
88 PD4/D4 DATA4 Data Bus 4 I/O
89 PD3/D3 DATA3 Data Bus 3 I/O
90 PD2/D2 DATA2 Data Bus 2 I/O
91 PD1/D1 DATA1 Data Bus 1 I/O
92 PD0/D0 DATA0 Data Bus 0 I/O
93 VSS GND
94 XTAL XTAL Oscillator Input I
95 MD3 Mode 3 Multiplex setting with Mode 2 (set H) I
96 EXTAL EXTAL Oscillator output O
97 MD2 Mode 2 Multiplex setting with Mode 3 (set L) I
98 NMI NONMASK Non-maskarable Input I
99 VCC (FWP) FWP Write Mode for Flash memory I
100 PA16/AH FLASH MODE FWP Control O
101 PA17/WAIT FAN ON/OFF Not used O
102 MD1 Mode 1 MCU Mode setting with Mode 0 (set H) I
103 MD0 Mode 0 MCU Mode setting with Mode 1 (set L) I
104 PLLVCC PLLVCC Power for PLL
105 PLLCAP PLLCAP PLL Filter
106 PLLVSS PLLGND GND for PLL
107 PA15/CK M-CLK CPU Clock output O
108 RES RESET RESET Input Active L I
109 PE0/TIOC0A/DREQ0 ET7050SCS Serial Chip select for Color Correction ET5070 Active L O
110 PE1/TIOC0B/DRAK0 FAN_CS1 Chip select for FAN 1 O
111 PE2/TIOC0C/DREQ1 FAN_CS2 Chip select for FAN 2 O
112 VCC 5V
113 PE3/TIOC0D/DRAK1 SDA3 IIC Bus 3 Data
114 PE4/TIOC1A SCL3 IIC Bus 3 Clock
115 PE5/TIOC1B USB_BRST Pull-up resistor on/off for USB
116 PE6/TIOC2A SH_SEL S&H Select
117 VSS GND
118 PF0/AN0 KEY1 Key iput 1 (A/D input) I
119 PF1/AN1 KEY2 Key iput 2(A/D input) I
120 PF2/AN2 KEY3 Key iput 3(A/D input) I
121 PF3/AN3 OPT1 Option Destination (A/D input) I
122 PF4/AN4 OPT2 Option Panel Maker EPSN:H I
123 PF5/AN5 LAMP DET Detection Lamp Error I
124 AVSS GND GND for A/D
125 PF6/AN6 POWER FAIL Power Fail (A/D input: Abnormal when 2V or less input) I
126 PF7/AN7 SDATA IN Serial Data input I
127 AVREF 5 V Reference Voltage for A/D
128 AVCC 5 V Power for A/D
129 VSS GND
130 PA0/RXD0 PW_RX PW365 Rx I
131 PA1/TXD0 PW_TX PW365 Tx O
132 PA2/SCK0/DREQ0/IRQ0
133 PA3/RXD1 Rx RS232C Rx I
134 PA4/TXD1 Tx RS232C Tx O
135 VCC 5V
136 PA5/SCK1/DREQ1/IRQ1 USB INTR USB Dividing signal input Active L I
137 PE7/TIOC2B FAN SW FAN ON/OFF output O
138 PE8/TIOC3A LAMP SW LAMP ON/OFF output Active H O
139 PE9/TIOC3B SDATA OUT Serial Data output O
140 PE10/TIOC3C SCLK Serial Clock output O
141 VSS GND
142 PE11/TIOC3D EXP RESET I/O Expander Active H O
143 PE12/TIOC4A R/C Remote Control signal input Active L I
144 PE13/TIOC4B/MRES PW RESET PW365 Reset signal output Active L O
Pin No. Name Signal name Function Operation Polarity