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6.2 When the Emulator Debugger Does Not Start Up Properly
(1) When the LED Display of the PC7501 is Abnormal
Table 6.1 LED's abnormal display and its checkpoints
Error
Connection to
the target system
Checkpoint
LEDs do not light up.
All LEDs remain lit.
The POWER LED of
"STATUS OF TARGET"
does not light up.
The CLOCK LED of
"STATUS OF TARGET"
does not light up.
The RESET LED of
"STATUS OF TARGET"
does not go out.
-
-
Connected
Not connected
Connected
Connected
Recheck the power cable is connected to the
PC7501.
See the user's manual of the PC7501.
Recheck the connection between the PC7501 and
this product.
See "3.7 Connecting the PC7501" (page 36).
Check power is properly supplied to the target
system and that the target system is properly
grounded.
(1) Check that both the main and sub clocks of the
emulator debugger are not set to "EXT".
See the CLK command of the emulator
debugger.
(2) Check the oscillation circuit in the emulator is
oscillating.
See "3.1 Selecting Clock Supply" (page 26).
(1) Check the oscillation circuit in the target system
is oscillating.
(2) Check the switches in the emulation probe are
correctly set.
See "3.5 Setting Switches" (page 31).
Check the reset pin of the target system is pulled
up.