Index-4
Index
May 28, 2008
6871620L01-C
troubleshooting waveforms
16.8 MHz buffer input and output 6-3
receive baseband interface port (BBP) 6-6
RX serial audio port (SAP) 6-5
transmit baseband interface port (BBP) 6-7
U
universal asynchronous receiver/transmitter
universal connector
universal serial bus (USB) 3-16
V
VCO (voltage-controlled oscillator) 3-7
VCO buffer IC (VCOBIC) U200, FGU 3-12
VOCON section
audio
single-ended gain stage U9904 3-20
connector J1 (display and keypad) 3-14
connector J2 (encryption module, CE interface
connection and audio jack connection) 3-14
connector J3 (buttons and controls connections) 3-14
dual display
interface support components 3-20
radio ce interface connector circuitry 3-22
static RAM (SRAM) IC U1409 3-17
voltage
measurement, troubleshooting 4-3
regulation, GCAP II IC U501 3-19
voltage-controlled oscillator (VCO) 3-7
W
waveforms, troubleshooting
16.8 MHz buffer input and output 6-3
receive baseband interface port (BBP) 6-6
Summary of Contents for ASTRO XTSTM 4000
Page 1: ...COLOR CHORDS 7 ASTRO XTSTM 4000 Portable Radio Detailed Service Manual ...
Page 2: ......
Page 16: ...May 28 2008 6871620L01 C xiv Commercial Warranty Notes ...
Page 22: ...May 28 2008 6871620L01 C 1 6 Introduction Notes ...
Page 26: ...May 28 2008 6871620L01 C 2 4 Radio Power Notes ...
Page 56: ...May 28 2008 6871620L01 C 3 30 Theory of Operation Notes ...
Page 100: ...May 28 2008 6871620L01 C 6 8 Troubleshooting Waveforms Notes ...
Page 194: ...May 28 2008 6871620L01 C B 2 Motorola Service Centers Notes ...
Page 204: ...May 28 2008 6871620L01 C Glossary 10 Glossary Notes ...
Page 209: ......