Motorola HT 1000 series Theory/Troubleshooting Manual page 11

Universal Connector
Figure 1A. DC Power Distribution Block Diagram (Closed Architecture Controller and VHF or UHF Transceiver)
Figure 1B. DC Power Distribution Block Diagram (Open Architecture Controller and 800 or 900MHz Transceiver)
U709
5V
Regulator
5V
U705
Micro C
Opt B+
Harmonic
Filter
CR109 CR108
RX
L122
RF Amp
L121
SB+
Mixer
Q107
R5
U103
Q105 5V
5V
Regulator
SLIC
U709
5V
5V
Regulator
FLASH
EEPROM U705
Micro P
SRAM
Controller Board
B+ CNTL
* U601 HEAR/CLEAR used on 900 MHz radios only.
Opt B+
Universal Connector
RX
CR108
L105
CR109
U101
ALC
C138
R5
Q108
R5
RF Amp Mixer
SB+
U706
Audio PA
5V
U701
ASF IC
Controller Board
SB+
Front Cover
SB+
Flex
SB+
U101
L105
T5
ALC
Vcc
VCOB IC
U201
T5
S
Out
R/T
Ref Osc
Synth
Transceiver Board
SB+
U706
Audio PA
Q702
U701 *U601
HEAR/
ASF IC
CLEAR
SB+
Front Cover
SB+
Flex
SB+
BATT B+
T5
VCO
Vss
VCOB IC
T5
S
Out
Ref Osc
Synth
Transceiver Board
SB+
On
Off
B+
Controls
Flex
B+
Jumper Flex
Raw B+
Fuse
1 Amp
+
U105
Battery
7.5V
PA Module
5V
Regulator
U202
5V
IF IC
D/A IC
MECH SB+
On
Q703
Off
Controls
Flex
U712
Electrical
Switch
Raw B+
Expansion
Board
Jumper Flex
Raw B+
Fuse
1 Amp
+
Q101
U105
Battery
7.5V
PA Module
5V
Regulator
U202
5V
IF IC D/A IC
3