Model:
D-311
No.
437
Subject:
Battery does not charge up all the way: Add the
charge Kit
Date:
May 2, 1995
Symptom:
(**)
Battery is not able to operate unit for more than two hours even though battery was
fully charged (charged for more than 4 hours)
Solution:
Replace Resistor R424 in the Charge Detection circuit with the Charge Bd. Mount kit
and perform the following modification procedure.
REF
FORMER
NEW
DESCRIPTION
PART NUMBER
DESCRIPTION
PART NUMBER
R424
CHIP
RESISTOR 100
KOHMS
1-216-845-11
CHARGE BD A.
MOUNT KIT
X-4945-506-1
Procedure:
Set the variable resistor on the CHGA board counterclockwise, until the resistance
measured between the CHGA board’s leads is at a minimum (about 10K).
Remove R424 and solder the leads of the CHGA board in its place.
CSA-13
Hi-Fi Products
Service Bulletin
Sony Service Company - Technical Services
A Division of Sony Electronics Inc.
Sony Drive, Park Ridge, New Jersey 07656
Reference: T/N #GA-94064
PRINTED IN USA
Autoflagged - NO
PRINTED ON RECYCLED PAPER
