Motorola APX 2000 - Page 943

Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: UHF1 (84012620001) 8-112
Figure 8-51. Display/Keypad Lighting Control Circuit
21
R2201M2
C2201M2
C2202M2
IC2_TRANS_VREF2
7 2
U2202M2
I2C_CLK
I2C_DATA
54
63
1
8
IN
IO
SDA2
SCL1
SDA1
VREF1
VREF2GND
EN
SCL2
R2206M2
R2204M2
SDA_5V
SCL_5V
R2254M2
C2223M2
Q2202M2
OMAP_RESET
1
3
2
47K
10K
20
19
18
24
23
22
17
16
15
14
13
12
11
10
8
7
6
5
4
3
2
1
25
9
LED5
LED4
LED3
LED2
LED1
LED0
LED14
VDD
LED6
LED7
LED13
LED8
LED9
LED10
LED11
LED12
A2
A1
A0
SDA
RST
SCL
GND1 GND2
LED15
C2203M2
R2207M2
U2201M2
R2246M2
R2245M2
R2244M2
E2248M2
E2249M2
E2247M2
E2246M2
E2245M2
E2244M2
L2205M2
E2242M2
L2204M2
L2203M2
L2202M2
TOP_LIGHTBAR_RED_LED
TOP_LIGHTBAR_GREEN_LED
TOP_LIGHTBAR_AMBER_LED
KEYPAD_WHITE_LED
TX_RX_RED_LED
TX_RX_GREEN_LED
TX_RX_AMBER_LED
MAIN_DISPLAY_LED1
MAIN_DISPLAY_LED2
MAIN_DISPLAY_LED3
MAIN_DISPLAY_LED4
C2222M2
C2221M2 C2216M2 C2215M2
C2214M2
C2213M2
C2212M2
C2211M2
RADIO TOP LIGHTING
E2003M2
J2302M2
J2302M2
51
59
J2302M2
J2302M2
J2302M2
J2302M2
J2302M2
J2302M2
53
55
56
58
57
60
LIGHTING CONTROLERS
C11M2 C13M2 C12M2
R2235M2