3. TEST PROGRAMS.
The DR-17 has two built in test programs. These are the “Dealer Diagnostics” and the “Service Diagnostics”. Both
diagnostics can be used to determine which board or module is defect.
3.1 Dealer Diagnostics
.
This test diagnostics the communication between the several ICs in the CDR module. To start the test press the buttons
<PLAY>+<STOP> simultaneously and switch on the power.
During this diagnostics the message “BUSY” is blinking on the display (this can last for a couple of minutes). When an error
is detected the message “ERROR” is displayed. For the meaning of this error the service diagnostics has to be ran.
Since no CD is used for this test, the playback and record parts of the module are not tested thoroughly.
3.2 Service Diagnostics.
This Diagnostics tests the main board and CDM assembly (also known as Basic Engine) of the CDR module and the
keyboard and display board.
If an error is detected, an error number is displayed which refers to the error.
The test is executed with a normal CD loaded, so the recording part of the CDM is not tested thoroughly.
To start the test press the keys <PLAY>+<NEXT> simultaneously and switch the power on.
See the attached sheet for a flowchart of the “SERVICE TEST PROGRAM”.
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