Canon BJC-820, Руководство по обслуживанию

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2.2 Carriage Board
JCRB1 (Carriage ribbon cable connector)
Pin No. Signal IN/OUT Function
1 TH OUT Thermistor output (to obtain ambient temperature
for scanner)
2 ENCA OUT Encoder phase A output
3 ENCG Encoder GND
4 ENCB OUT Encoder phase B output
5 SENSEPOW IN 5V for encoder
6~9 HGND IN 5V to drive head logic
10 EEPRD OUT Head EEPROM read data
11 EEPSK IN Head EEPROM transfer clock
12 EEPWD IN Head EEPROM write data
13 CSCR IN Head EEPROM chip select
14 DHE IN Dummy heat enable signal
15 DATACL IN/OUT Data signal for CL/Scan-in data bus 1 during
scanning
16 SOKCL OUT Status output signal for KCL
17 BE3 IN/OUT Block enable 3/Register write data signal output
during scanning
18 BE0 IN/OUT Block enable 0/Reset signal output during scanning
19 BG IN Data latch signal/Scan-in data read trigger during
scanning
20 DATAK IN/OUT Data signal for K/Scan-in data bus 0 during
scanning
21 BE2 IN/OUT Block enable 2/Register enable signal output during
scanning
22 BE1 IN/OUT Block enable 1/Register write clock signal output
during scanning
23 HEKCL IN Heat signal for KCL
24 HEMLC IN Heat signal for MLC
25 DATAML IN/OUT Data signal for ML/Scan-in data bus 2 during
scanning
26 DATAC IN/OUT Data signal for C/Scan-in data bus 3 during
scanning
29 HEADSEN OUT Head-detection signal
27,28,30,32 GND Logic GND
31 HCLK IN/OUT Transfer clock signal/Transfer clock signal during
scanning
33 TOMY OUT Digital temperature signal for MY
Part 5: REFERENCE BJC-8200
5-10
1
36
36
1
1
20
1
20
1
40
JHD1 JHD2
JCRB1 JCRB2 JCRB3
Figure 5-8 Carriage Board