Kenwood NX-720H(G) Service Manual page 8

NX-720H(G)/720H
4. External Speaker (Option)
4-1. KES-5
External speaker KES-5 can be installed for KCT-60.
■ Connection procedure
1. Remove the ACC. cap on the rear of the transceiver.
2. Connect the D-sub connector of the KCT-60 to the D-sub
15-pin terminal of the transceiver.
3. Insert the two crimp terminals of the KES-5 to pins 3 and
12 of the square plug.
4. Connect the square plug to the 15-pin connector of the
KCT-60.
Note:
You must set up using the KPG-141D.
Before the external speaker can be used, you must as-
sign one of the keys as "External Speaker", using the
KPG-141D.
13 10 7 4 1
14 11 8 5 2
15 12 9 6 3
Black/
White lead
12
3
Black lead
5. Changing Serial Port Level
5-1. Change FNC1 (TXD) and FNC2 (RXD) of D-SUB
15-pin connector from TTL level to RS-232C level
FNC1 (TXD /6pin ) and FNC2 (RXD /7pin ) of D-SUB 15-
pin connector are confi gured at the TTL level as the default
value. But you can change these serial port level to RS-
232C level through the RS-232C level converter IC (IC516)
by confi guring the port.
Remove the R664, R635 and R662 chip jumpers and sol-
der the chip jumpers to R666, R633 and R665.
5-2. Change FNC1 (TXD), FNC2 (RXD), FNC3 (RTS)
and FNC4 (CTS) of D-SUB 15-pin connector from
TTL level to RS-232C level
FNC1 (TXD /6pin ), FNC2 (RXD /7pin ), FNC3 (RTS /8pin )
and FNC4 (CTS /9pin ) of D-SUB 15-pin connector are con-
figured at the TTL level as the default value. But you can
change these serial port level to RS-232C level through the
RS-232C level converter IC (IC516) by confi guring the port.
8
INSTALLATION
KCT-60
Square plug
Remove the R664, R635, R662, R659, R658 and R632
chip jumpers and solder the chip jumpers to R666, R633,
R665, R663, R660 and R630.
+
5
R664 R635 R662
6
R666 R633 R665
IC703
5
R664 R635 R662 R659 R658 R632
6
IC703
■ In the case of 5-1.
[TTL level]
R664,R635 and R662: 0 chip jumper.
R666, R633 and R665: open.
[RS-232C level]
R666, R633 and R665: 0 chip jumper.
R664, R635 and R662: open.
■ In the case of 5-2.
[TTL level]
R664, R635, R662, R659, R658 and R632: 0 chip
jumper.
R666, R633, R665, R663, R660 and R630: open.
[RS-232C level]
R666, R633, R665, R663, R660 and R630: 0 chip
jumper.
R664, R635, R662, R659, R658 and R632: open.
6. Changing of Signal Type
6-1.Change signal output of D-SUB connector
from DEO to AFO
The output (4pin) of D-SUB 15-pin connector is confi g-
ured at the DEO as the default value.
Remove the R796 chip jumper and solder the clip jumper
to R798.
6-2.Change signal input of D-SUB connector from
DI to MI2
The input (5pin) of D-SUB 15-pin connector is confi gured
at the DI as the default value.
Remove the R797 chip jumper and solder the clip jumper
to R799.
15
R659 R658 R632
R663 R660 R630 16
19
R797
R796
20
R798 R799
15
16
19 TX-RX unit
R796 R797
20
Component side