Pioneer TS4 Service Manual page 39

No. Command
24 Check Input Voltage
25 Check High Band (22kHz)
26 Check LNB DC (18V)
27 Check LNB DC (14V)
28 Check MODEM(SET)
29 Check DSCR Card Detect
30 Check BANK Card Detect
31 Application Download
32 Check pararell Port
33 Check MODEM Sensitivity
34 Check MODEM Carrier Frequency
35 Check VCXO
36 Check Slow_SW4:3(12V)
37 Flash Soft clear
38 Set data for V42
TV SCART output
Mode 1 VCR output
Mode 2 VCR output
Mode 3 MPEG A/V output
Mode 4 MPEG A/V output
Mode 5 VCR output
Mode 6 MPEG A/V output
Checks the tuner AGC voltage, external Slow_SW input voltage
OK : Both check are OK, NG : Both check are NG
* The IRD has to be set to the initial state, and 6V or 12V has to be applied from outside.
Checks the oscillation circuit in the IRD
22kHz pulse is carried from the antenna input
DC18V is carried from the antenna input
DC14V is carried from the antenna input
Checks the communication between the MODEM in the IRD and External MODEM.
(Refer to the Appendix Page 71.)
OK : Communication check is OK, NG:Communication check is NG (Use DC OFFSET JIG)
Checks the DETECT terminal of the DSCR Card
Checks the DETECT terminal of the BANK Card
Used for downloading the Application to IRD
Performs parallel port loop back test
Check sensitivity between IRD's modem and external modem.
Check carrier frequency at 390 Hz, 450 Hz, 1300 Hz and 2100 Hz.
Check VCXO frequency at upper and lower side.
Sets the Slow_SW to 4:3
Erase the Test Program
Sets V42 packet communication timing.
Fig.2 TV VCR SCART TEST
RCA audio output
VCR output
VCR output
MPEG Audio output
MPEG Audio output
VCR output
MPEG Audio output
Function
VCR SCART output
TV output
MPEG A/V output
TV output
Mute
Mute
MPEG A/V output
TS4
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