THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
for schematic diagram:
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
1
• All resistors are in Ω and
/
W or less unless otherwise
4
specified.
•
%
: indicates tolerance.
• C : panel designation.
• A : B+ Line.
• Power voltage are dc 3.7 V and fed with regulated dc
power supply from battery terminal.
• Voltages are dc with respect to ground under tolerances.
no mark : STANDBY
(
) : AC ADAPTOR IN
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Signal path.
F
: AUDIO
• IC101 (CXN1450-2ABL) on MAIN board cannot be
replaced individually.
Replace it with "MAIN BOARD, COMPLETE".
• The voltage of IC101 cannot be measured.
DR-BT22
SECTION 3
DIAGRAMS
for printed wiring boards:
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Pattern face side:Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
• MAIN board is four-layer pritnted board.However, the
patterns of layer 2 and 3 have not been included in this
diagrams.
• IC Block Diagrams
— CHARGER Board —
IC251 XC9103D093MR
CURRENT
FB
1
RIPPLE DETECT
AND FB
+
VDD
2
VDD
–
ERROR AMP
VREF WITH
SOFT START,
CE
CE
3
IC261 BQ24010ADRCR
IN
1
V
I(BAT)
V
O(REG)
CHG ENABLE
VCC
2
VCC
REFERENCE
VCC
AND BIAS
V
I(BAT)
V
(SLP)
STAT1
3
STAT2
4
V
O(REG)
V
I(BAT)
V
(RCH)
V
I(BAT)
VSET
V
I(SET)
V
(PRECHG)
V
(TAPER)
V
I(SET)
V
(TERM)
5
VSS
7
7
PHASE
VDD
COMPENSATION
PWM
COMPARATOR
+
BAFFER,
DRIVER
–
RAMP WAVE
PWM/PFM
GENERATOR,
CONTROLER
OSC
V
(ISET)
I
I
(DETECT)
(FAULT)
V
ENABLE
ENABLE
VSET
CHG ENABLE
V
O(REG)
THERMAL
SHUTDOWN
DEGLITCH
CHARGE
CONTROL,
TIMER,
AND
DISPLAY
LOGIC
I
ENABLE
RECHARGE
(FAULT)
DEGLITCH
I
ENABLE
PRECHARGE
(DETECT)
CHG ENABLE
TAPER
DEGLITCH
TERM
DEGLITCH
DR-BT22
5
EXT
4
GND
10
OUT
9
BAT
I(BAT)
VCC
8
TS
PG
7
PG
6
ISET