Replacement Of Back-Up Battery; Adjustment And Check Locations; Digital Board – Component Side – - Sony PCM-R500 Service Manual

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Replacement of Back-up Battery

The back-up battery for clock is designed to serve for more than
seven years under normal service conditions (room temperature and
ordinary humidity).
When replacing the battery, take note of the following:
• Perform the above "Clock IC Back-up Check" and remedy the
cause of battery consumption.
• The open voltage of the battery as removed is 3.0 V or more when
it is new. If this voltage is 2.0 V or less, then battery is fully con-
sumed and needs to be replaced.
• After the battery is replaced, perform the "Clock IC Back-up
Check" again and set the clock.
• The coin type lithium battery (CR2032) is used for replacement.
* For description of the clock setting, see page 5.
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Adjustment and Check Locations :

DIGITAL board – component side –
Q Q
3 6 7 1 3 1 5
END SENSOR ADJ
(S-END)
RV502
TP
(S-END)
co
.
– 23 –
9 4 2 8
0 5 8 2 9 9 4 2 8
TP
(RF)
(T-END)
TP
RV501
(SWP)
TP
(T-END)
TP
(BATT+)
TP
TP
MAIN–
(BATT–)
TEST
m
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