Sony D-555 - +3.4 V Adjustment; Rechargeable Voltage Adjustment

D-555/Z555 |
+3.4 V Adjustment Rechargeable Voitage Adjustment
VOM
(de range)
VOM
(de range)
main board | | main board ||
+
Adjustment Procedure: Adjustment Procedure:
TP (+3.4 V) TP (R. ae
4 ;
1,
Put
the
set
into
service
mode
(see
page
5).
1,
Connect
the
VOM
to
main
board
test
point
TP
2. Connect the VOM to main board test point TP (R.V).
(+3.4
V).
2.
Apply
DC
9V
with
requrated
de
power
supply
3.
Adjust
the
pattern
connecting
(
@
or
©)
to
from
external
power
jack
CN401.
obtain
3.4
to
3.55
V
reading
on
the
VOM.
3.
Adjust
RV402
for
7.05
—
7.5
V
reading
on
the
VOM.
VOM reading
Note: Measure after the VOM reading becomes stable.
down Adjustment Location: main board
O: short XX: open
4. After adjustment, release service mode (see page
5).
Adjustment Location: main board
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TP(R.V)