Canon PIXMA MP530, Service Manual, Page: 81 / 91

CN905 (to/from NCU Sub Board)
CN906 (SUB1, to/from NCU Sub Board)
CN909 (SUB2, to NCU Sub Board, for Speaker)
5 CMLD CML relay drive signal (1: ON 0: OFF) OUT
6 HRD H relay drive signal (1: ON (no ring) 2: OFF (ring)) IN
7 CI1 CI detect signal 1 (1: CI 0: No CI) IN
8 +3.3V Digital power supply IN
9 IPSEL Terminal switch signal -
10 D_GND Digital ground -
11 SNOOP Snoop signal IN
12 TX 4-wire analog transmission signal OUT
13 RX 4-wire analog reception signal IN
14 +12V Analog power supply -
15 A_GND Analog ground -
No. Signal name Function Input / Output
1 SPSTP Speaker stop signal OUT
2 BUZZER Keypad/Alarm volume control OUT
3 SCAN_OPEN Scanner open switch signal IN
4 GND Ground -
5 DIA0 Diode sensor anode 0 OUT
6 DIA1 Diode sensor anode 1 OUT
7 DIODE0 Diode sensor signal 0 IN
8 DIODE1 Diode sensor signal 1 IN
9 +5V VCC +5V OUT
No. Signal name Function Input / Output
1 +3.3V VCC +3.3V OUT
2 UH1DP PictBridge D+ signal BUS
3 UH1DM PictBridge D- signal BUS
4 PPON PictBridge VBUS power supply
OUT
5 OCI Over current detect signal IN
No. Signal name Function Input / Output
1 RX Line monitor signal OUT
2 SPSEL2 Volume control signal 2 OUT
3 SPSEL1
Volume control signal 1
OUT
4 SPSEL0 Sound source select signal (Keypad/Alarm or Line monitor) OUT
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<Part 3: 3. CONNECTOR LOCATION AND PIN LAYOUT; 3-1. Logic Board Ass'y>
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