III –
23
3.4
Control Panel PCB
The control panel PCB and the main PCB communicate with each other by serially transmit-
ting commands and data.
The control panel unit consists of a gate array, an LCD, and LEDs, which are controlled ac-
cording to commands issued from the FAX engine on the main PCB.
The calendar clock is backed up by the backup circuit on the main PCB.
The panel FPC is a flexible keyboard PCB which integrates the key matrix having rubber
keytops.
Control Panel PCB and its Related Circuit
FAX
Engine
Backup
Circuit
+5V
Reset
Circuit
+5V
POWER
I/O Ports
Serial
Communications
Ports
RESET
RESET
LED
S
Panel FPC
(Key Matrix)
LCD
Main PCB
Control Panel PCB
SIDN
SDOUT
PCLK
Gate Array
Содержание FAX-615
Страница 4: ...CHAPTER I GENERAL DESCRIPTION ...
Страница 5: ...CONTENTS 1 EQUIPMENT OUTLINE I 1 1 1 External Appearance I 1 1 2 Components I 1 2 SPECIFICATIONS I 2 ...
Страница 10: ...CHAPTER II INSTALLATION ...
Страница 11: ...CHAPTER III THEORY OF OPERATION ...
Страница 33: ...III 20 5 MODEM Main PCB Circuit Diagram 5 5 1 MODEM 2 Clock for MODEM ...
Страница 35: ...III 22 NCU Circuit Diagram 2 1 3 5 6 7 8 9 4 2 a ...
Страница 38: ...CHAPTER IV INDICATION AND INFORMATION PRINTOUT OF ERROR ...
Страница 50: ...CHAPTER V MAINTENANCE ...