Pioneer TS4, Service Manual, Page: 36 / 71

36
TS4
6.1.2 Self-Diagnosis Mode
Procedure
1) Open the bonnet and short the Test Pin K6003 and GND.
(The Test Pin terminal is located at the upper side of CN6002 as seen from the front.)
2) Turn ON the power.
Push any key.
The self-diagnosis mode is set.
LED “0 to 33” on the IRD front panel light up one by one and then all lit. If a LED stops between “0 and 33”, the circuit block corresponding
to that number should be checked.
3) When all the LEDs are lit, it indicates that the IRD is waiting for downloading of the Test software Main.
The Test software Main will be downloaded from the PC connected to the IRD.
4) When the downloading completes normally, OK is displayed on the PC display. If OK, it indicates that the parallel port of the IRD is
operating normally.
5) After completing the downloading, resetting the power supply, and this time all LEDs “0 to 33” will light up one by one, and finally all lit.
If a LED stops, the circuit block corresponding to that number should be checked.
Front side
Rear side
Fig.1 Test Pin LOCATION
Example
Downloading of Self-Diagnosis Program
1) Move the cursor to “Program Download” at MAKE CHECK_STEP, press the RETURN key and then press the F10 key to end the
setting.
2) When the IRD side sets into the downloading standby state, select IRD CHECK from the main menu, and press the RETURN key. Press
the RETURN key once more to download the program.
MAIN ASSY
Test Pin (K2002)
[for Application Download Mode]
Test Pin (K6003)
[for Self-Diagnosis Mode]
IC2001
CN6002
STi5510
CN5004 CN5005
CN5003