Canon PIXMA MP530, Руководство по обслуживанию, Страница: 82 / 91

3-2. NCU Board
J1 (to Logic Board)
J2 (Modular Jack, TEL / LINE)
TEL : Pin 1 to 6
LINE : Pin 7 to 12
J3 (Power Supply Unit)
No. Signal name Function Input / Output
1 A_GND Analog ground -
2 +12V Analog power supply IN
3 RX 4-wire analog reception signal OUT
4 TX 4-wire analog transmission signal IN
5 SNOOP Snoop signal OUT
6 D_GND Digital ground -
7 IPSEL Terminal switch signal -
8 +3.3V Digital power supply IN
9 CI1 CI detect signal 1 (1: CI 0: No CI) OUT
10 HRD H relay drive signal (1: ON (no ring) 0: OFF (ring)) OUT
11 CMLD CML relay drive signal (1: ON 0: OFF) IN
12 HOOK1 Hook detect signal (1: ON 0: OFF) IN
13 SRD S relay drive signal (1: ON 0: OFF) IN
14 DCLIM Not used IN
15 +5.5V Mechanical relay power supply IN
16 D_GND Digital ground -
No. Signal name Function Input / Output
1 VH+ External telephone line hook detect power supply -
2 VH- VH ground -
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<Part 3: 3. CONNECTOR LOCATION AND PIN LAYOUT ; 3-2. NCU Board>
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