8.11. OPERATION BOARD SECTION
The unit consists of an LCD (Liquid crystal display), KEYs and LED (light-emitting diode). They are controlled by the Gate Array
(IC1) and ASIC (IC1: on the DIGITAL BOARD). The key matrix table is shown below.
IC1
ASIC
DIGITAL BOARD OPERATION BOARD
READ POSITION SENSOR
DOCUMENT SENSOR
CN7 CN1
(Chip on board type)
GATE ARRAY
IC1
CN2
7X5
KEYS
MATRIX
LED
KSL0~4
XLED13, 14
SW41
SW42
XLED11,12
XLED 15
LCD
LED5
KIN0
KIN2~7
KX-FT901/903CX-B/W/S OPERATION BOARD: BLOCK DIAGRAM
139
KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S
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