Free Run Signals on Schematic 1C
Signa! Name
Chip
Pin No.
Signa! Description
LDBS
U104
8 HI,
then pulses for approx.
l
s
LDBV
U50l
11
HI,
then pulses for approx.
1 s
LMAS U40l
4
select activities
LMBS U40l
5
select activities
DAO
to
DA7 U502
address activities
U505
aH outputs
HI*
*
(if a senso! module is installed then active)
Free Run Signals on Schematic 1D
Signa! Name
Chip
Pin No.
Signa! Description
LDBS
U40l 12
HI,
then pulses for approx.
l
s
LGAS U40l
11
HI,
then pulses for approx.
l
s
LRTCS U401 lO
HI,
then pulses for approx. 1 s
LHPIBS
U40l
9
HI,
then pulses for approx.
l
s
LHPIBI
U402
9
HI
LRTCI U406
1
LO
U404
aH outputs
HI
U403
aH outputs
HI
Troubleshooting the Battery Buffered RAM Supply
This information deals with schematic 1B
li
parameters or applications are not stored after power off check the
battery voltage first (approx. 3V)
Make sure that S201C (3) is in ON position.
With the instrument turned off check that the voltage at the collector
of Q201 is approx.
2.7
Volto
With the instrument turned on, the voltage at
Q201jC
should be 5.1
Volto
4-6 Troubleshooting
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