User Manual Part 1

TROUBLESHOOTING
MM101271V1 R2A 73
Troubleshooting information:
Each output in Group A is written to a PLD register by the 860 processor. Its path to the
card edge is shown below. They all come out of the PLD, are buffered and go to a pin on
J7.
Table 25 - I/O Output Group A Paths
I/O OUTPUTS GROUP A PATHS
SIGNAL NAME PLD PIN BUFFER IN BUFFER OUT J7 PIN
CPPTOUT 28 U34-1 U34-2 J7-B13
TXCGDIS 70 U34-11 U34-10 J7-B2
RPT_INH 103 U34-9 U34-8 J7-A13
RPTKEY 111 U33-11 U33-10 J7-B10
SPARE1 100 U34-3 U34-4 J7-A7
SPARE2 101 U33-13 U33-12 J7-A10
9.4.3.22 I/O OUTPUTS TEST - GROUP B
Procedure:
To test each output, the FactoryTest Manual Mode Command is given to cause the
monitor point to go high or low. Some outputs will require a 10K pullup resistor to 5V to
be seen.
Table 26 - FactoryTest Manual Mode Commands (Group B)
SIGNAL NAME 10K
PULLUP
REQUIRED
COMMAND
HIGH
COMMAND
LOW
MONITOR
POINT
SYNTH_CLK yes W synth_ctrl 0x00 W synth_ctrl 0xFF J12-13
SYNTH_DATA no W synth_ctrl 0x00 W synth_ctrl 0xFF J12-14
SYNTH_LD_EN yes W synth_ctrl 0x00 W synth_ctrl 0xFF J12-15
EMSQTOAV no W voter_ctrl 0xFF W voter_ctrl 0x00 J12-17
RX_MUTE no W rx_ctrl 0x00 W rx_ctrl 0xFF J12-11
REMRPT yes W rx_ctrl 0x00 W rx_ctrl 0xFF J12-3
SYNTH_DATA is internally pulled to +12V.
With no load, EMSQTOAV will pull up to +12V.
RX_MUTE will pull to +8V.
Troubleshooting information:
Each output in Group B is written to a PLD register by the 860 processor. Its path to the
card edge is shown below. They all come out of the PLD, are buffered and inverted and
go to a pin on J7.