Chapter 8.5 900Mhz Troubleshooting Tables; Introduction; Tables; Table 8.5-1. Main Board To Keypad Board Flex Assembly (J601) - Motorola XTS 2500 Service Manual

Chapter 8.5 900MHz Troubleshooting Tables

8.5.1 Introduction

This chapter contains troubleshooting tables necessary to isolate a problem to the component level.
Use these tables in conjunction with Chapter 4.5, 900 MHz Detailed Theories of Operation
(page 4.5-1), Chapter 5, Troubleshooting Procedures (page 5-1), Chapter 6.5, 900 MHz
Troubleshooting Charts (page 6.5-1), and Chapter 7.5, Troubleshooting Waveforms (page 7.5-1).
This manual is to be used in conjunction with the ASTRO XTS 2500/XTS 2500
Radios Basic Service Manual (Motorola part number 6816984H01), which uses the pass/fail service
approach to radio problems.
A blank entry in the "To/From" column of J601 indicates the signal is accessible only at J601.

8.5.2 Tables

Table 8.5-1. Main Board to Keypad Board Flex Assembly (J601)

J601
Description
Pin Number
1
2
3
4
5 HOST_WAKE
6
7 REGISTER_SEL
8 DISPLAY_SEL
9
10 SPI_MOSI_B
11 SPI_MISO_B
12
13 SSI_FSYNC
14 CODEC_TX
15 CODEC_RX
16 KEYPAD_ROW0
17 KEYPAD_ROW1
18 KEYPAD_ROW2
To/From
V1.875 L703
V2.9 L704
UNSW_B+ R701
SW_B+ R708
WAKEUP
SCKB R620
R621
R622
SSI_CLK R616
R617
R625
R626
I
Digital Portable