obd2cartool.com Tech-2-User-Guide
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PCB DIAGNOSTIC CHART<br />
Test Results Solution<br />
RAM/ROM<br />
0 - Pass<br />
1 - ROM read fail<br />
2 - RAM read fail<br />
3 - RAM write and read do not <strong>com</strong>pare.<br />
Record type of failure.<br />
Cycle <strong>Tech</strong> 2 power (press [PWR]) and retest.<br />
If problem persists, contact Customer Support.<br />
RS-485 loopback<br />
Pass<br />
Fail -<br />
Loopback may not be connected.<br />
Check loopback connection.<br />
If problem persists, contact Customer Support.<br />
RS-232 loopback<br />
Pass<br />
Fail -<br />
Loopback may not be connected.<br />
Check loopback connection.<br />
If problem persists, contact Customer Support.<br />
Keypad<br />
PCMCIA<br />
(Tests both card slots)<br />
Display controller<br />
(Contrast and characters)<br />
Sound transducer<br />
Real-time clock<br />
Test successful<br />
Keypad failed<br />
Exiting the test before all keys are pressed<br />
results in a failed keypad test.<br />
Card detected<br />
Card not present<br />
Fail<br />
<strong>User</strong> determines if display is correct.<br />
<strong>User</strong> determines if sound transducer is<br />
working.<br />
Time is displayed correctly.<br />
Invalid values are displayed for date, year,<br />
hour, minute, or second.<br />
Cycle <strong>Tech</strong> 2 power and retest.<br />
If problem persists, contact Customer Support.<br />
Check that card is inserted properly.<br />
Cycle <strong>Tech</strong> 2 power and retest.<br />
If problem persists, contact Customer Support.<br />
If the display shows a noticeable failure during tests,<br />
contact Customer Support.<br />
If no sound is emitted by repeatedly selecting Automated<br />
Test or Sound On, contact Customer Support.<br />
Reset clock. Cycle <strong>Tech</strong> 2 power and retest. If time is<br />
not retained, contact Customer Support.
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