Operation Board Section - Panasonic KX-FT901CX-B Service Manual

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.
ASIC
CN7 CN1
IC1
DIGITAL BOARD
KX-FT901CX-B / KX-FT903CX-B / KX-FT901CX-W / KX-FT903CX-W / KX-FT901CX-S / KX-FT903CX-S
CN2
GATE ARRAY
IC1
XLED11,12
LED5
READ POSITION SENSOR
DOCUMENT SENSOR
KX-FT901/903CX-B/W/S OPERATION BOARD: BLOCK DIAGRAM
139
LCD
(Chip on board type)
SW41
XLED13, 14
SW42
KSL0~4 7X5
KEYS
KIN0
MATRIX
KIN2~7
XLED 15 LED
OPERATION BOARD