Service manual

3-7
No. Signal name Function Input/Output
1 to 3 VH2 Head drive power supply 20V Out
4 DIA2 Diode sensor anode 2 In
5 EEPDI Head EEPROM data signal In
6 EEPDO Head EEPROM data signal Out
7 EEPSK Head EEPROM serial clock signal Out
8 EEPCS Head EEPROM chip select signal Out
9 DATA0 Head data PM even Out
10 VDD Head logic drive power supply 3.3V Out
11 VHT
Head drive power supply 16V (short-circuiting with VH on
the logic board)
Out
12, 13 VH1 Head drive power supply 16V Out
14 to 16 VH2 Head drive power supply 16V Out
17 DIA3 Diode sensor anode 3 In
18 DATA17 Head data M1 odd Out
19 DATA14 Head data Y even Out
20 DATA13 Head data M2 odd Out
21 DATA4 Head data BK even Out
22 DIA0 Diode sensor anode 0 In
23 VDD Head logic drive power supply 3.3V Out
24 to 26 VH1 Head drive power supply 16V Out
27 HE89 Heat enable M1, C1 Out
28 HE7 Heat enable Y Out
29 HE56 Heat enable C2, M2 Out
30 LT Transmission clock clutch signal Out
31 DATA15 Head data Y odd Out
32 DATA16 Head data M1 even Out
33 DATA11 Head data C2 odd Out
34 DATA8 Head data PC even Out
35 DATA1 Head data PM odd -
36 DIA1 Diode sensor anode 1 In
37 HE34 Heat enable G, PC Out
38 HE2 Heat enable BK Out
39 HE01 Heat enable PM, R Out
40 to 42 GNDH2 Head GND -
43 DIK Diode sensor cathode Out
44 DATA19 Head data C1 odd Out
45 DATA10 Head data C2 even Out
46 DATA9 Head data PC odd Out
47 DATA2 Head data R even Out
48 DATA5 Head data BK odd Out
49 VSS Logic GND -
50 to 52 GNDH1 Head GND -
53 to 55 GNDH2 Head GND -
56 CLK Head transmission clock Out
57 DATA18 Head data C1 even Out
58 DATA12 Head data M2 even Out
59 DATA7 Head data G odd Out
60 DATA6 Head data G even Out
61 DATA3 Head data R odd Out
62 VSS Logic GND -
63 to 65 GNDH1 Head GND -