Troubleshooting (Control Panels); Self Diagnostics Mode (Bkds-7015) - Sony DVS-7200A Maintenance Manual

3-1. Self Diagnostics Mode (BKDS-7015)

The self diagnostics consisting of the following ten menu items can be performed by connecting the
terminals in the section 3-3-1 and start the self diagnostics mode. Run the tests in each menu.
(1) "1. Memory test" Menu
Tested the peripheral memory of the main CPU and checked the memories function.
(2) "2. PIO test" Menu
Tested the PIO (IC67, IC70) and checked the PIO function.
(3) "3. GPI test" Menu
Tested the interface of the GPI connector on the connector panel of this unit and checked the inter-
face functions.
(4) "4. FDC test" Menu
Tested the floppy disk controller (FDC) and the floppy disk drive (FDD), checked the disk condition.
(5) "5. Timer & Interrupt test" Menu
Tested the CPU-246 board built-in timer and the interrupt controller, and checked they function. For
this test, DVS-7200A is needed.
(6) "6. EL panel test" Menu
Tested the EL display and the control circuit, and checked the displayed contents.
(7) "7. And test" Menu
Checked the displayed contents on the alphanumeric display.
(8) "8. Communication test" Menu
Tested the communication of the communication ports and checked their function.
(9) "9. Buzzer test" Menu
Checked that the buzzer sounds.
(10)"10. SUB CPU test" Menu
Tested the sub CPU which controls lighting of the LEDs, and which is read the switch data and
volume control data. And checked the sub CPU functions.
(11)"11. MISC test" Menu
Used at the factory.
Use "Q. Quit" to exit the self diagnostics menu.
DVS-7200AE MMP1
Section 3

Troubleshooting (Control Panels)

3-1