Table of Contents
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Please follow the items below when BBIC or EEPROM is replaced.
Items
Adjustment
(A)
1.8V Supply
*
Confirmation
B)
4.0V Supply
Confirmation
C)
2.7V Supply
Confirmation
D)
BBIC
*
Confirmation
(E)
Charge
Control Check
& Charge
Current
Monitor
Confirmation
Point
1. Confirm that the voltage between test point "TP12" and GND is 1.8V ± 0.02V.
TP12
2. Adjust the 1.8V voltage of TP12 executing command "bandgap XX" (XX is the value).
1. Confirm that the voltage between "TP10" and GND is 3.85V ± 0.2V.
TP10
1. Confirm that the voltage between "TP11" and GND is 2.7V ± 0.1V.
TP11
1. BBIC Confirmation (Execute the command "getchk").
-
2. Confirm the returned checksum value.
Connection of checksum value and program number is shown
below.
1. Apply 6V between J3(+) and J4(-) with current limit of PSU to 200mA.
-
2. Confirm that the charge current is ON/OFF.
3. SW to decrease current limit of PSU to 100mA.
4. Confirm that the charge current is stable.
Procedure
100
Check or
Replace
Parts
IC1, Q2,
C40,
R4
IC1, F1,
C1, C2,
C3, C57,
C74,
R1, R2,
R3, Q1,
D1, L1, R57
IC1, Q3,
C4, C5,
R9, R10,
R11
IC1, X1,
IC1, Q4,
Q5, Q9,
D6, D7, L4,
L5,
C73, C74,
R5,
R6, R7,
R72, F1
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