Operation Board Section - Panasonic KX-FG2452CX Service Manual

6.11. Operation Board Section

The unit consists of a LCD (Liquid crystal display), KEYs and LEDs (light-emitting diodes). They are controlled by the Gate Array
(IC301) and ASIC (IC501: on the DIGITAL BOARD).
The key matrix table is shown below.
ASIC
IC501
DIGITAL BOARD
Key Matrix
CN504 CN301
XLED9, 10, 13
DOCUMENT TOP SW
DOCUMENT SET SW
CHARGE LED
OPERATION BOARD
LCD MODULE
CN302
GATE ARRAY
IC301
KIN0~7
LED2
KX-FG2452CX : OPERATION BOARD
47
KSL0~4
8x5
KEYS
MATRIX
AUTO ANSWER
BLOCK DIAGRAM
KX-FG2452CX