Philips CDR775 Service Manual page 4

6.2.2 Requirements to perform the test
• Working keyboard to start up the test.
• Working local display to check the output messages.
CL96532086-024.eps
090999
Figure 6-1
6.2.1 Description
The intention of the dealer diagnostics is to give an indication
of the CDR player status. An inexperienced, even non-
technical dealer will/can perform the test. Tests are executed
automatically without need for external tools or disassembly of
the unit. This test checks the CDR main board using the same
tests as the electrical service diagnostics program. Only the
result of the test, "PASSED" or "ERROR", will be shown on the
display. Pressing keys [F FWD] and [REWIND] simultaneously
while switching on the unit, starts the test. Switching off the unit
ends the test.
Diagnostic Software
6. Diagnostic Software
6.1 Dealer mode
The purpose of the dealer mode is to prevent people taking out
the CD inside the player at exhibitions, showrooms etc.. This
mode disables the open/close function of the player,
The dealer mode can be switched on and off pressing keys
[OPEN/CLOSE] and [STOP] of the CDR player simultaneously
while switching on the unit. The dealer mode is stored in the
flash memory and can only be changed by executing the above
actions.
6.2 Dealer diagnostics