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Items
(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
(F)
Charge Detection
*
(OFF)
Confirmation
(G)
Battery Monitor
*
Confirmation &
Adjustment
Adjustment
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.
1. Stop supplying 6V to J3(+) and J4(-).
-
2. Execute the command "charge".
3. Confirm that the returned value is 0x01 (hex).
1. Apply 2.3V ± 0.005V between BATT(+) and BATT(-).
-
2. Execute the command "Backloff", then "readbatt".
3. Confirm: 29
(If the returned value is within the range, no need to do step 4 and 5.)
4. If the reading is out of range in step 3 above, adjust the battery monitor excuting
command "wreeprom 00 01 01 XX". (XX is the reading at step 3.)
5. Then excute command "wreeprom 00 36 01 YY". (YY= XX - 0E)
Procedure*
returned value
36 (Hex)
66
Check
Replace
Parts
IC1, Q2,
C40,
R4
IC1, F1,
C2, C3,
C57, C74,
R1, R2,
Q1, D1,
R57
IC1, Q3,
C4, C5,
R10, R11
IC1, X1,
IC1, Q4,
Q5, Q9
D6, D7,
L5,
C73, C74,
R5,
R6, R7,
R72,
IC1, Q4,
Q5, Q9
D6, D7,
L5,
C73, C74,
R5,
R6, R7,
R72,
IC1, F1,
C74, C2
C3, R81,
R24,
R73, C9
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