Operation Board Section - Panasonic KX-FP207FX-S Service Manual

6.9.

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
DOCUMENT TOP SW
DOCUMENT SET SW
LCD MODULE
CN302
GATE ARRAY
IC301
KIN0~7
LED2
R320
OPERATION BOARD BLOCK DIAGRAM
45
KSL0~4
8x5
KEYS
MATRIX
+5V
LED301
AUTO ANSWER
KX-FP207FX-S/FP218FX-S