Operation Board Section - Panasonic KX-FLB852CX Service Manual

KX-FLB852CX / KX-FLB852CXS

7.13. 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
(IC101) and ASIC (IC610: on the DIGITAL BOARD).
The key matrix table is shown below.
ASIC
IC604
DIGITAL BOARD
1. Key Matrix
a. Hard Scan
KIN0
KSL0 2
KSL1 5
KSL2 8
KSL3 FLASH
KSL4 0
*LED7 should be set to KSL4. "8 x 5" key matrix is executed by hardware scanning.
b. Soft Scan
2. LED
• • • • AUTO ANSWER LED ON/OFF port---LED6
• • • • SORTER MODE LED ON/OFF port---LED3
• • • • FAX MODE LED ON/OFF port---XLED8
• • • • COPY MODE LED ON/OFF port---LED5
• • • • SCAN MODE LED ON/OFF port---LED2
CN613 CN102
KIN1 KIN2
1 3
4 6
7 9
REDIAL MONITOR
* #
SKIN0 (XLED11)
SKS0 (XLED9) ----------
SKS1 (XLED10)
LCD MODULE
CN103
GATE ARRAY IC
IC101
3x2
KEYS
MATRIX
(Soft)
KIN3 KIN4
→
STOP
↑
Sorter Mode
SET COPY
↓
START
RESOLUTION SCAN
KIN1 (XLED12)
S5
S9 S4
252
8x5
KEYS
MATRIX
(Hard)
LED
OPERATION BOARD
KIN5 KIN6
FAX MENU
←
HELP
S1 CLEAR
S2 ZOOM
PAPER TRAY CONTRAST
KIN2 (XLED13)
S3
S10
KIN7
Caller ID
Auto Answer
S6
S7
S8