Figure 8-28. Display/Keypad Lighting Control Circuit (84012320001) - Motorola APX 1000 Detailed Service Manual

8-56
V_LED_TOP
V_EXT_1.85
RADIO TOP LIGHTING
R2201
200K
C2202
0.1UF
C2201
0.1UF
IC2_TRANS_VREF2
V_LED_TOP
U2202
PCA9306
8
EN
I2C_CLK
IN 3 6
SCL1 SCL2
IO 4 5
SDA1
SDA2
I2C_DATA
R2204
3.3K
SCL_5V
SDA_5V
V_LED_TOP
V_EXT_1.85
R2254
10K
Q2202
DTC114YKAF
3
10K
2
47K
C2223
100PF
OMAP_RESET

Figure 8-28. Display/Keypad Lighting Control Circuit (84012320001)

V_LED_TOP
R2207
0
C2203
R2206
0.1UF
3.3K
U2201
LP3943
E2244
19 1
SCL LED0
18 2
RST LED1
E2245
20 3
SDA LED2
22 4 E2246
A0 LED3
E2242 470
23 5 R2244
A1 LED4
E2248
24 6
R2245 300
A2 LED5
E2249
7 R2246 470
LED6
8 E2247
LED7
10 L2202 270NH
LED8
11 L2203 270NH
LED9
12 L2204 270NH
LED10
L2205 270NH
13
LED11
14
LED12
15
LED13
16
LED14
17
LED15
Schematics, Boards Overlays, and Parts Lists: Transceiver (RF) Boards: VHF (84012320001 / PC000352A01)
TOP_LIGHTBAR_RED_LED 53
J2302
TOP_LIGHTBAR_GREEN_LED 55
J2302
TOP_LIGHTBAR_AMBER_LED 57
J2302
KEYPAD_WHITE_LED
TX_RX_RED_LED 58
J2302
TX_RX_GREEN_LED 60
J2302
TX_RX_AMBER_LED 56
J2302
MAIN_DISPLAY_LED1
MAIN_DISPLAY_LED2
MAIN_DISPLAY_LED3
MAIN_DISPLAY_LED4
51
J2302
V_SW_5
59
J2302
LIGHTING CONTROLERS
V_SW_5 V_LED_TOP
R2235
0