Toshiba DP120F, Service Manual

Page: 636 / 706

DP120F/DP125F Troubleshooting 11-24 March 2000 © TOSHIBA TEC
1.5.7 CLOCK IC TEST [MENU], [9], [4], [07]
This test checks whether the RTC (IC23) operates normally. After setting the fixed time and
date in the RTC, it reads the time to check the RTC operation.
(1) Use the [
↑
] or [
↓
] key to select “07. CLOCK IC TEST”, and then press the [ENTER] key.
(2) When you complete the test, press the [STOP] key to return to the standby mode screen.
(3) Depending on the result of the test, replace the Main PBA by referring to “Chapter 8
Removal/Replacement/Adjustment” on page 8-48.
1.5.8 SCANNER TEST [MENU], [9], [4], [08]
This test conducts a read/write test on all the areas of the memory contained in the DSC (IC59).
It also turns on and off the LED array contained in the CIS and reads its data to check if the CIS
operates normally.
(1) Use the [
↑
] or [
↓
] key to select “08. SCANNER TEST”, and then press the [ENTER]
key.
→
CLOCK IC TEST CLOCK IC TEST
OK
When the test has been
completed normally
(2) When you complete the test, press the [STOP] key to return to the standby mode screen.
(3) Depending on the result of the test, replace the Main PBA or CIS by referring to “Chapter
8 Removal/Replacement/Adjustment” on page 8-46 or 8-4.
→
SCANNER TEST SCANNER TEST
OK
When the test has been
completed normally