Troubleshooting; Overview; Troubleshooting Charts; Troubleshooting And Repair Comments - Motorola GP68 Service Manual

Overview

This section contains five troubleshooting tables for the following components:
¥ Receiver
• Transmitter
• Synthesizer
• Microprocessor
• Voltage Controlled Oscillator (VCO)
• LCD

Troubleshooting Charts

Refer to following pages.

Troubleshooting and Repair Comments

While troubleshooting, if you determine that the reference oscillator crystal (Y201) is defective, the entire Radio Frequency
(RF) board must be replaced. When the new Radio Frequency board is installed, the eight-digit oscillator temperature compen-
sation code, supplied with the new RF board, must be programmed into the radio controller. See the Radio Service Software
(RSS) manual, number 6881086C08 (in English), section 5.3.3. Simply enter the eight-digit code in to the box on the RSS Ref-
erence Oscillator data program using the F8 key on your computer. Keep the new oscillator compensation code in your records.
March, 1997 6881086C09-O
Section 5

Troubleshooting

5-1