6871620L01-C
May 28, 2008
Troubleshooting Tables:
List of Board and IC Signals
7-13
P16
DVSS
GROUND
No
H12
EVSS
GROUND
No
H10
H1VSS
GROUND
No
H8
H2VSS
GROUND
No
J8
I1VSS
GROUND
No
L8
I2VSS
GROUND
No
P8
J1VSS
GROUND
No
T9
J2VSS
GROUND
No
H9
VSS1
GROUND
No
L16
VSS2
GROUND
No
H16
LVSS
GROUND
No
H15
PVSS
GROUND
No
M8
K_QVSS
GROUND
No
T12
Q4VSS
GROUND
No
M16
Q2_Q8VSS
GROUND
No
H11
Q6VSS
GROUND
No
H14
Q7VSS
GROUND
No
U20
URXD1_USB_VMI
Pin C9 of U1304
No
T21
URTS1_XRXD
URTS1_XRXD (TP)
*
Yes
H22
AUDIO_JACK_PTT
C53
Yes
F21
URXD2
Pin 4 of U1306
Yes
B20
BSY_IN_RTS
Pin C12 of U1304
No
B13
RX_SSI_DATA
R1124
Data from
Abacus to DSP
Yes
B12
TX_SSI_CLK
R1112
1.537 Mhz
Yes
C12
TX_SSI_FSYNC
R1114
Yes
T22
CODEC_TX
R1337
TX Audio to
DSP
Yes
P21
CODEC_DCLK
R1335
512 kHz
Yes
T20
CODEC_FSYNC
R1336
8 kHz Pulse
Yes
D7
SPI_MISOA
Pin 4 of U1404
SPI A Data Out
No
Table 7-7. U1401 Patriot MCU/DSP IC Pinouts (Continued)
U1401
Pin No.
Description
To/From
Comment
Accessible
on
Mainboard?
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: ......