Kenwood NX-3220 K Service Manual page 23

2.4.2 Display unit (XC1-209K-XX)
Ref. No. Part Name
A151 IC
IC201 IC
Q141 Transistor
Q201 Transistor
Q221-223 Transistor
Q227-229 Transistor
D111-120 LED
D132 LED
D141-144 Diode
D180,181 Diode
D201,202 LED
D221 LED
D227 LED
2.5 TERMINAL FUNCTION
2.5.1 TX-RX unit (XC1-178K-00,XC1-180K-00)
Pin No. Name I/O
1 NC - No connection
2 ENC0 I Rotary switch input
3 ENC0 I Rotary switch input
4 ENC1 I Rotary switch input
5 GND - GND
6 ENC3 I Rotary switch input
7 ENC2 I Rotary switch input
8 +B O Power output after passing through
the fuse
9 50A O DC 5.0V output
10 VOL I Volume level input
11 GND - GND
12 SB I Switched B input
13 NC - No connection
1 /EMG I Emergency input
2 GND - GND
3 /SIDE2 I Side 2 input
4 /SIDE1 I Side 1 input
5 /PTT I PTT input
6 NC - No connection
1 32LCD O DC 3.2V output
2 32LCD O DC 3.2V output
3 18M O DC 1.8V output
4 LCD_VSS - GND
5 LCD_/CS O LCD CS signal
Use / Function
GPS frontend module
AND gate (2 input)
DC switch
(button backlight)
DC switch (LCD)
DC switch (TX/busy)
DC switch (Light bar)
Button backlight
Button backlight
Reverse current protection
Excessive input protection
LCD backlight
TX/busy
Light bar
Function
CN1
CN7
CN402
Pin No. Name I/O
6 LCD_A0 O Data/Command control signal
7 LCD_E O LCD read signal
8 WR0_R/W O LCD write signal
9 LCD_/RST O LCD reset signal
10 LCD_DB0 I/O LCD Data Bus 0
11 LCD_DB1 I/O LCD Data Bus 1
12 LCD_DB2 I/O LCD Data Bus 2
13 LCD_DB3 I/O LCD Data Bus 3
14 LCD_DB4 I/O LCD Data Bus 4
15 LCD_DB5 I/O LCD Data Bus 5
16 LCD_DB6 I/O LCD Data Bus 6
17 LCD_DB7 I/O LCD Data Bus 7
18 LCD_BLC O LCD backlight control
19 GND - GND
20 GND - GND
21 ME - MIC GND
22 MIC I Main MIC input
23 50A O DC 5.0V output
24 50A O DC 5.0V output
25 /KEYI4 I Key matrix input
26 /KEYI3 I Key matrix input
27 /KEYI2 I Key matrix input
28 /KEYI1 I Key matrix input
29 /KEYI0 I Key matrix input
30 KEYO3 O Key matrix output
31 KEYO2 O Key matrix output
32 KEYO1 O Key matrix output
33 KEYO0 O Key matrix output
34 LED_G O LED Green control
35 LED_B O LED Red control
36 LED_R O LED Blue control
37 LBC_G O Light Bar Green Control
38 LBC_R O Light Bar Red Control
39 LBC_B O Light Bar Blue Control
40 GND - GND
41 GND - GND
1 SP- O BTL output for internal speaker -
2 SP+ O BTL output for internal speaker +
2.5.2 Display unit (XC1-209K-XX A/2)
Pin No. Name I/O
1 NC - No connection
2 K- - Cathode for backlight(GND)
3 A+ O Anode for backlight
4 VSS - GND
Function
CN602
Function
CN201
(No.RA053<Rev.001>)1-23