Table of Contents
Advertisement
S102
LINE/BAT
Switch
4
P1007
Line
Cord
F301
5A
BT301
Batteries
Required Condition
Check
AC
line
power
per Table
5-3.
Turn
off
power.
Move
to
BAT.
Plugged
into
live
receptacle.
Remove
fuse
and connect ammeter
to fuse
clip
0
to
500mA
charging
rate,
varies
with
line
voltage
and
battery state of charge.
Full
charge
is
=9.8V
over
4
cells.
R301
adjusts
charging
rate
(float
voltage}.
Each
battery
ceil
voltage during charging.
Q301
Anode
C304
-h
VR301
12
P1004
pin
8
or
U301
pin
11.
12A
VR101,
IN
13
Q307
and
Q308
Base
14
Q307,
Q308
Collector
15
C304,
C305
1.5—
3V
for
any
cell.
Full
wave
rectified
voltage, 15
VDC
nominal.
+
17.5V
minimum.
Should
saturate only
when
battery
approaches
full
charge.
8.2V
zener.
Unplug
line
cord
&
turn
power
on.
100kHz
5V
square
wave.
+ 7V minimum
Square wave,
±
0.7V
at
25kHz.
Must
oscillate
from
saturation to
twice
battery voltage
{-19V)
at
25kHz.
±
17.5V
minimum
(
±25V
typical
with
fully
charged
bat.)
Charge
circuit
checks.
No
charge, see step
5A.
Correct charging but
short battery operating
time,
see
step
6.
If
voltage
is
low and
adjust-
ment
of
R301 does
not
start
charging,
see
steps
7
and
following.
If
voltage
is
low and adjustment
of
R301 does
start
charging,
see Table
5-11 for adjust-
ment
of battery
charge
voltage.
High voltage
or
zero
Indi-
cates
damaged
cell.
Output
of
CR103
Output
of
CR104.
Triggers
Q301
gate
thru
R306
and
CR301
unless
Q302
is
on.
Discharge checks.
Clock
input.
If
no
input,
see
step
12A.
Battery voltage input to
VR101.
Output
of
U301,
-4-4.
Inverter
Inverter
Output,
input
to
VR102
and
VR103
Advertisement
Table of Contents
