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TS440S.45
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1991-03-18
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58 lines
TS440S.45
The following tests change internal signals. They are most useful if
you are trying to trace the circuits controlled by these signals.
You'll need a s service manual (or at least a schematic) to made reals
sense of these.
23 Band select - all lines high
24 BAND select - all lines low
25 PD select - all lines high
26 PD select - all lines low
27 ENF select - all lines high
28 ENF select - all lines low
29 ENP select - a:ll lines high
30 ENP select - all lines low
31 RES select - all lines high
32 RES select - all lines low
33 CO select - all lines high
34 CO select - all lines low
35 AX select - all lines high
36 AX select - all lines low
these next tests check the outputs of the 8255 parallel port interfaces,
which select several internal functions.
37 (IC2) port A all lines high
38 (IC2) port A all lines low
39 (IC2) port B all lines high
40 (IC2) port B all lines low
41 (IC2) port C0-C3 high, C4-C7 low
42 (IC2) port C0-C3 low, C4-C7 high
43 (IC53) port C all lines high
44 (IC53) port C all lines low
Following display busy lines and scan lines in the rightmost 9 digits of
the display. You will push buttons to cause the digit to change from a
1 to a 0 indicating that the associated button has been pushed.
test bit8 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
---- ---- ---- ---- ---- ---- ---- ---- ---- ----
45 LOCK AT Mic UP Mic DN PTT/AT VS1
46 (none)
47 (key scanner)
48 1 6 V/M VOICE
49 2 7 M>V RIT A/B
50 3 8 SCAN XIT SPLIT
51 4 9 M.IN T-Fset A=B dip3 dip4 dip5
52 5 0 CLEAR 1Mhz dip1 dip2 dip6 dip7
53 ENT DOWN UP dip8 dip9 dip10
(the digits 0-9 are on the front panel keyboard; dip2-dip10 are the
segments of S50, the SSB frequency response dipswitch on the rear of the
control unit printed circuit board.)
54 not used
55 not used
56 END