3-1(E)
FDDR-7000 IM
Section 3
Confirmation in Installation
(Side-A/Component side)
CN4
S3
S301
S302
ND300
ND301
D10
D11
D12
D13
D3
D4
D5
D6
D7
D8
D305
D300
CN300
D507
CN5
D2
D24
D1
D35
D36
D37
ND1
ND2
CNT1
CNT2
CNT3
CNT4
S2
D505
D508
D301
D302
D303
D304
3-1. Description of On-Board Switch
Settings and LEDs
n
The letters printed in bold indicate the Ref. No. and
mounting position on circuit board.
3-1-1. CPU-253 Board
.
Terminal and Connector
CNT1 (D2)
:
+
5 V check terminal
Check the terminal of the
+
5 V B power supply. Used
to check the
+
5 V B power supply for re-adjustment
when optional boards are additionally installed, etc.
CNT2 (D2)
:
+
3 V check terminal
Check the terminal of the
+
3 V power supply. Used to
check the
+
3 V power supply for re-adjustment when
optional boards are additionally installed, etc.
CNT3 (D2)
:
_
5 V check terminal
Check the terminal of the
_
5 V power supply. Used to
check the
_
5 V power supply for re-adjustment when
optional boards are additionally installed, etc.
CNT4 (E2)
: GND terminal
The reference GND terminal with respect to
+
5 V B/
+
3 V/
_
5 V check terminals.
CN4 (H1)
: 232C (1) connector
D-sub 9-pin connector conforming with the RS-232C
signal specifications. Connected to the control terminal
of the personal computer (PC) and used for system
monitoring and factory adjustment.
CN5 (R3)
: CENT connector
Parallel port connector. Used during production in the
factory.
CN300 (N1)
: 232C (2) connector
D-sub 9-pin connector conforming with the RS-232C
signal specifications. Connected to the control terminal
of the personal computer and used for system monitoring
and factory adjustment.
To use this connector, bit-8 of switch SW3 (S302) on the
CPU-253 board must be set to ON. When bit-8 of
switch SW2 (S302) is set to OFF, the signal is connected
to the TERMINAL (TEST) terminal on the rear panel.
.
LED
D2 (C2)
: RESET indicator (red)
Turns on when the RESET signal is triggered in the
system.
Turns on when the RESET switch is pressed.
The system is forcibly initialized when this indicator
turns on.
