Sony DVS-7200A Maintenance Manual page 124

3-6. Troubleshooting (BKDS-7025/7026)
3-6-4. Test Procedures
5. Timer & Interrupt test
This item tests the built-in timer and interrupt controller (IC76) on the CPU-263 board and is checks their
function correctly.
n
This test requires DVS-7200A.
(1) Connect the "PANEL 1" connector (D-SUB 9-pin) on the rear panel of the DVS-7200A to the
"SWITCHER" connector (D-SUB 9-pin) on the connector panel of this unit.
(2) After starting the self diagnostics mode in the section 3-6-3, input the menu item number "5" on the
"H/W Tester on CPU-263" menu and press [RETURN].
H/W Test = > 5
The Timer & Interrupt test is automatically performed and the test result appeared on the terminal
display.
<<< TIMER & INTERRUPT TEST >>>
1. TIMER 0 & INT : OK !
2. TIMER 1 & INT : OK !
3. TIMER 2 & INT : OK !
4. VD INT
Hit any key to quit !
(*1) OK ! : Normal
(3) Checking the test result
Check that "OK" appears on each item of the Timer & and Interrupt test.
(4) Exiting the "Timer & and Interrupt test"
Press your required terminal button to return to the "H/W Tester on CPU-263" menu.
3-56
*1)
(*1)
(*1)
: OK ! (*1)
DVS-7200AE MMP1