Sony DFS-601 Service manual

D-FS601

SERVICE MANUAL

Ver 1.0 2002. 07

Photo : US model

SPECIFICATIONS

TV: 2 - 13 ch
WB (weather band): 1 - 7 ch
FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz

FM: 87.5 - 108.0 MHz
AM: 531 - 1 710 kHz

FM: 87.5 - 108.0 MHz
AM: 530 - 1 710 kHz

antenna

2.4 V DC

120 V, 60 Hz

CD player

System

Compact disc digital audio system

Laser diode properties

Material: GaAlAs
Wav elength: λ = 780 nm
Emission duration: Continuous
Laser output: Less than 44.6 µW
(This output is the value measured at a distance
of 200 mm from the objective lens surface on
the optical pick-up block with 7 mm aperture.)

D-A conversion

1-bit quartz time-axis control

Frequency response

40 - 20 000 Hz

307)

Output (at 4.5 V input level)

Headphones (stereo minijack)

Approx. 5 mW + Approx. 5 mW at 16 Ω

Radio

Frequency range (STEP switch)

•US model
9 kHz step:

TV: 2 - 13 ch
WB (weather band): 1 - 7 ch
FM: 87.5 - 108.0 MHz
AM: 531 - 1 710 kHz

0

dB (measured by JEITA CP-

–4.5

10 kHz step:

•Canadian model
9 kHz step:

10 kHz step:

Antenna

*(TV/WB/)FM:Headphones/earphones cord

AM: Built-in ferrite bar antenna
*US model only

General

Power requirements

For the area code of the model you
purchased, check the upper left side of the
bar code on the package.

• Sony NH-WM2AA rechargeable batteries:

•Two LR6 (size AA) batteries: 3 V DC

•AC power adaptor (DC IN 4.5 V jack)

US Model

Canadian Model

Model Name Using Similar Mechanism D-SJ301

CD Mechanism Type CDM-3125ER

Optical Pick-up Type DAX-25E

Battery life* (approx. hours)

(When you use the CD player on a flat and stable
surface.)
Playing time varies depending on how the CD
player is used.

When using G-PROTECTION RADIO

NH-WM2AA 32 35 40
(charged for
about 4 hours**)

Two Sony alkaline 46 50 70
batteries LR6 (SG)
(produced in Japan)

*Measured value by the standard of JEITA (Japan

Electronics and Information Technology
Industries Association).

** Charging time varies depending on how the

rechargeable battery is used.

Operating temperature

5°C - 35°C (41°F - 95°F)

Dimensions (w/h/d) (including
projecting parts and controls)

Approx. 133.9 × 38.1 × 147.5 mm

3

⁄8× 1 1⁄2× 57⁄8 in.)

(5

Mass (excluding accessories)

Approx. 331 g (11.7 oz.)

12 on

— Continued on next page —

9-874-078-01

2002G1600-1

© 2002.07

TV/WB/FM/AM PORTABLE CD PLAYER

US model

FM/AM PORTABLE CD PLAYER

Canadian model

Sony Corporation

Personal Audio Company

Published by Sony Engineering Corporation

D-FS601

Supplied accessories

For the area code of the location in which you
purchased the CD player, check the upper left side
of the bar code on the package.

AC power adaptor (1)
Headphones/earphones (1)
Hand strap (1)

For US customers

The AC power adaptor supplied is not intended to
be serviced. Should the AC power adaptor cease to
function in its intended manner, during the warranty
period, the adaptor should be returned to your
nearest Sony Service Center or Sony Authorized
Repair Center for replacement, or after warranty
period, it should be discarded.

Design and specifications are subject to change
without notice.

Unleaded solder

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

DANGER

Invisible laser radiation when open and interlock failed or defeated.
Avoid direct exposure to beam.

CAUTION

Use of controls or adjustments or performance of procedures other
than those specified herein may result in hazardous radiation
exposure.

Laser component in this product is capable of emitting
radiation exceeding the limit for Class 1.

This Compact Disc player is
classified as a CLASS 1 LASER
product.
The CLASS 1 LASER
PRODUCT label is located on
the rear exterior.

Flexible Circuit Board Repairing

•Keep the temperature of the soldering iron around 270°C during
repairing.

• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or
unsoldering.

Notes on chip component replacement

•Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be dam­aged by heat.

On AC power adaptor

• Use only the AC power adaptor supplied or

recommended in “Accessories (supplied/
optional).” Do not use any other AC power
adaptor. It may cause a malfunction.

Polarity of the plug

•When disconnecting the AC power adaptor

from the AC outlet, grasp the adaptor
itself. Do not pull it by the cord.

• Do not touch the AC power adaptor with

wet hands.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH
MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

À LA SÉCURITÉ!

2

SECTION 1

SERVICING NOTES

D-FS601

TABLE OF CONTENTS

1. SERVICING NOTES ······················································· 3

2. GENERAL ·········································································· 4

3. DISASSEMBLY ································································ 6

3-1. Upper Lid, Middle Cabinet ··········································· 6
3-2. MD Assy (CDM-3125ER), MAIN Board ····················· 7
3-3. Turn Table Motor Assy (Spindle) (M901)····················· 7
3-4. Motor Assy (Sled) (M902), Optical Pick-up

(DAX-25E) ···································································· 8

3-5. SWITCH Board, Hold Lever ········································· 8

4. ELECTRICAL ADJUSTMENTS ································· 9

5. DIAGRAMS ······································································ 11

5-1. Block Diagrams – MAIN Section – ···························· 12

– TUNER Section – ····················································· 13
5-2. Printed Wiring Board – MAIN Board (Side A) – ······· 14
5-3. Printed Wiring Board – MAIN Board (Side B) –······· 15
5-4. Schematic Diagram – MAIN Board (1/5) – ··············· 16
5-5. Schematic Diagram – MAIN Board (2/5) – ··············· 17
5-6. Schematic Diagram – MAIN Board (3/5) – ··············· 18
5-7. Schematic Diagram – MAIN Board (4/5) – ··············· 19
5-8. Schematic Diagram – MAIN Board (5/5) – ··············· 20
5-9. Printed Wiring Board – SWITCH Board – ················ 21
5-10.Schematic Diagram – SWITCH Board – ··················· 22
5-11.IC Pin Function Descriptions ······································ 23
5-12.IC Block Diagrams ······················································ 27

6. EXPLODED VIEWS ······················································ 28

6-1. Upper Lid Section ······················································· 28
6-2. Cabinet Section ··························································· 29
6-3. Cabinet Lower Section ················································ 30
6-4. Optical Pick-up Section (CDM-3125ER) ···················· 31

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR
BASE UNIT

The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the charged
electrostatic load, etc. on clothing and the human body. During repair, pay
attention to electrostatic breakdown and also use the procedure in the printed
matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.

NOTES ON LASER DIODE EMISSION CHECK

The laser beam on this model is concentrated so as to be focused on the disc
reflective surface by the objective lens in the optical pick-up block. Therefore,
when checking the laser diode emission, observe from more than 30cm away
from the objective lens.

Before Replacing the Optical pick-up Block

Please be sure to check thoroughly the parameters as per the “Optical pick­up Block Checking Procedure” (Part No. : 9-960-027-11) issued separately
before replacing the optical Pick-up block.
Note and specifications required to check are given below.

• FOK output : IC601 yg pin (TP610)
When checking FOK, remove the lead wire to disc motor.

• RF signal P-to-P value : 0.4 to 0.5Vp-p

Laser Diode Checking Methods

During normal operation of the equipment, emission of the laser diode is
prohibited unless the upper panel is closed while turning ON the S801 (push
switch type).
The following two checking methods for the laser diode are operable.

Method :
Emission of the laser diode is visually checked.

1. Open the upper lid.

2. Push the S801 as shown in Fig. 1 .

3. Check the object lens for confirming normal emission of the laser diode.

If not emitting, there is a trouble in the automatic power control circuit or
the optical pick-up. During normal operation, the laser diode is turned
ON about 2.5 seconds for focus searching.

7. ELECTRICAL PARTS LIST ·······································32

S801

Fig. 1 Method to push the S801

3

D-FS601

Locating The Controls

CD player (fornt)
(Except US model)

SECTION 2

GENERAL

This section is extracted from
instruction manual.

1 1 - 5 buttons

(page 14)

2 AM button

(pages 12, 15)

3 FM button

(pages 12, 15)

4 HOLD switch

(page 18)

5 3-way control key

(see below)

6 VOL* (volume)

control
(page 7)

7 DC IN 4.5 V

(external power
input) jack
(pages 6, 21)

9 PRESET –/+ buttons

(page 15)

q; REPEAT/ENTER•

TUNING + button
(pages 9 - 12, 15)

qa PLAY MODE•

TUNING – button
(pages 9 - 12, 15)

qs SOUND button

(pages 17, 18)

qd MEMORY button

(pages 14, 15)

qf i (headphones)

jack
(pages 6, 13, 20)

8 Display

(pages 8, 10 - 14, 17, 18)

5 3-way control key

Push toward

N/> or
..

* There is a tactile dot beside VOL to show the direction to turn up the volume.
** There is a tactile dot beside N/>.

Press x•
RADIO OFF/
CHG.

N/>**: Play/AMS/search
(pages 7, 8, 11)

.: AMS/search (pages 7, 11)
x•RADIO OFF/CHG:

Stop•charge/turn off the radio
(pages 7, 15, 19)

qg Buckle

(page 6)

4

CD player (fornt)
(US model)

D-FS601

1 AM button

(pages 12, 15)

2 FM button

(pages 12, 15)

3 WB (weather band)

button (pages 12, 15)

4 TV button

(pages 12, 15)

5 HOLD switch

(page 18)

6 3-way control key

(see below)

7 VOL* (volume)

control
(page 7)

8 DC IN 4.5 V

(external power
input) jack
(pages 6, 21)

9 Display

(pages 8, 10 - 14, 17, 18)

q; 1 - 3 buttons

(page 14)

qa PRESET –/+ buttons

(page 15)

qs REPEAT/ENTER•

TUNING + button
(pages 9 - 12, 15)

qd PLAY MODE•

TUNING – button
(pages 9 - 12, 15)

qf SOUND button

(pages 17, 18)

qg MEMORY button

(pages 14, 15)

qh i (headphones)

jack
(pages 6, 13, 20)

qj Buckle

(page 6)

6 3-way control key

* There is a tactile dot beside VOL to show the direction to turn up the volume.
** There is a tactile dot beside N/>.

CD player (inside)

qk STEP switch

(page 16)

ql G-PROTECTION

switch
(page 17)

Push toward

N/> or
..

Press x•
RADIO OFF/
CHG.

N/>**: Play/AMS/search
(pages 7, 8, 11)

.: AMS/search (pages 7, 11)
x•RADIO OFF/CHG:

Stop•charge/turn off the radio
(pages 7, 15, 19)

w; LOCAL/DX switch

(page 13)

wa Battery compartment

(page 21)

5

D-FS601

DISASSEMBLY

z

The equipment can be removed using the following procedure.

SECTION 3

SET

UPPER LID, MIDDLE CABINET

MD ASSY
(CDM-3125ER),

MAIN BOARD

SWITCH BOARD, HOLD LEVER

Note : Follow the disassembly procedure in the numerical order given.

3-1. Upper Lid, Middle Cabinet

3

five screws (B2)

middle cabinet

5

MOTOR ASSY, TURN TABLE (SPINDLE)(M901)

MOTOR ASSY, (SLED)(M902),
OPTICAL PICK-UP (DAX-25E)

4

1

screw

2

cabinet lower sub assy

7

6

flexible board

upper lid

1

screw

6

3-2. MD Assy (CDM-3125ER), MAIN Board

y

1

flexible cable (15P)

3

connector (CN502)(black)

RV301

lever(vol)(B)

4

5

MD ASSY (CDM-3125ER)

2

connector (CN503)(white)

7

MAIN board

D-FS601

3-3. Turn Table Motor Assy (Spindle) (M901)

6

1

three screws

(B1.7x5)

turn table motor ass
(spindle) (M901)

cabinet lower sub assy

2

chassis

7

D-FS601

3-4. Motor Assy (Sled) (M902), Optical Pick-up (DAX-25E)

1

screw (B 1.7x5)

3

gear cover

gear B

9

screw assy, feed

5

8

2

4

motor assy (sled) (M902)

6

screw

(P 1.4x3.5)

7

bracket (Shaft)

qa

optical pick-up

(DAX-25E)

0

3-5. SWITCH Board, Hold Lever

When installing, align S903 with the
cut-out of the HOLD LEVER.

7

hold lever

chassis

2

four screws (B1.7 × 3)

4

cover lid

5

switch board

3

three screws (M1.4 × 2)

1

four screws (B1.7 × 3)

6

screw (B)
(1.4 × 4)

upper lid

9

O ring
When replacing the hold knob, coat here
with the specified grease (SGL-601).

8

hold knob

cabinet lower sub assy

8

SECTION 4

)

TJ629 (RF)

2 K

Ω

Oscilloscope

(AC range)

IC601

IC801

IC302

ELECTRICAL ADJUSTMENTS

D-FS601

CD SECTION

The CD section adjustments are done automatically in this set.

Precautions for Check

1. Perform check in the order given.

2. Use YEDS-18 disc (Part No.: 3-702-101-01) unless otherwise
indicated.

3. Power supply voltage requirement : DC4.5 V in DC IN jack.

(J401)
VOLUME : Minimum
AVLS : OFF
HOLD switch : OFF

[MAIN BOARD] (Side A) [MAIN BOARD] (Side B)

TAP802 (OPEN)

Focus bias Check

Condition:

• Hold the set in horizontal state.

• Terminate TAP802 (open) by solder.

Connection:

Procedure:

1. Connect the oscilloscope to the test points TJ629 (RF) on the
MAIN board.

2. Set a disc. (YEDS-18)

3. Press the B/> button.

4. Check the oscilloscope waveform is as shown below.
A good eye pattern means that the diamond shape (◊) in the
center of the waveform can be clearly distinguished.

RF Signal reference Waveform (Eye Pattern)

VOLT/DIV : 100 mV (With the 10 : 1 probe in use
TIME/DIV : 500ns

RF level

0.4 to 0.5 Vp-p

To watch the eye pattern, set the oscilloscope to AC range and
increase the vertical sensitivity of the oscilloscope for easy
watching.

5. Stop revolving of the disc motor by pressing the x button.

9

D-FS601

N

TUNER SECTION

• Switch Location
VOLUME : MAX

CT3, L3
AM TRACKING

L4

adjustment

AM FREQUENCY
COVERAGE asjustment

CT3

TJ8 (VT)

L5

L3

TV TRACKING
adjustment
L1
FM TRACKING
adjustment

BASS
AVLS : OFF

[AM]

BAND: AM
Signal generator

[FM]

BAND : FM
Signal generator

or BASS : OFF

AM RF signal
generator

30% amplitude modulation by 400Hz
signal.
Output level : as low as possible

FM RF signal
generator

75kHz(100%) amplitude modulation
by 1kHz signal.
Output level: as low as possible

Put the lead-wire
antenna close to
the set.

0.01µF

FM I
point

0 dB = 1 µV

•Repeat the procedures in each adjustment several times for the
maximum level meter indication.

•The AM tracking adjustments should be finally done by the
trimmer capacitors.

AM FREQUENCY COVERAGE ADJUSTMENT AND CHECK

Adjustment Part Frequency Display

Reading on Digital Voltmeter

L4 530kHz 1.2 ± 0.05V

Confirmation 1710kHz 7.6 ± 0.5V

AM TRACKING ADJUSTMENT

Adjust for a maximum reading on levelmeter
L3 620kHz

CT3 1400kHz

( ): US model

FM FREQUENCY COVERAGE CHECK

Adjustment Part Frequency Display

Confirmation

87.5MHz 4.2 ± 0.5V

(87.5MHz) (5.5 ± 0.5V)

Reading on Digital Voltmeter

FM TRACKING ADJUSTMENT

Adjust for a maximum reading levelmeter

L1 98.0MHz

US model only

TV TRACKING ADJUSTMENT

Adjust for a maximum reading on levelmeter

L5 ch10 197.75MHz

• Connecting levelmeter

set

J302 (

• Connecting digital voltmeter

TJ8 (VT)

i)

100k

16 Ω

Ω

levelmeter

digital voltmeter

Adjustment Location: Main board (Side B)

CT3, L3
AM TRACKING
adjustment

CT3

L3

L1
FM TRACKING
adjustment

L4
AM FREQUENCY
COVERAGE asjustment

TJ8 (VT)

L5
TV TRACKING
adjustment

10

SECTION 5

DIAGRAMS

D-FS601

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Par ts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.

Note on Schematic Diagrams:

• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

¢

•

• 2 : nonflammable resistor.

• C : panel designation.

• H : adjustment for repair.

• A : B+ Line.

•Power voltage is dc 4.5 V and fed with regulated dc power

•Voltages and waveforms are dc with respect to ground

Note:

The components identi­fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.

•Voltages are taken with a VOM (Input impedance 10 MΩ).

• Signal path.

: internal component.

supply from external power voltage jack.

under no-signal (detuned) conditions.

Voltage variations may be noted due to normal produc­tion tolerances.

F : FM
f : AM
J : CD

4

W or less unless otherwise

Note:

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.

• Waveforms

1

TEST POINT (TJ629,RF)

100mV/DIV, 400ns/DIV

2

IC601 rk (XTAO)

59ns

1V/DIV, 40ns/DIV

3

IC61 uf (XOUT)

13.3 µs

500mV/DIV, 4 µs/DIV

4

Q86 (collector)

327ns

1V/DIV, 100ns/DIV

MEMO

550mVp-p

2.5Vp-p

1.2Vp-p

3.7Vp-p

1111

D-FS601

5-1. Block Diagrams – MAIN Section –

OPTICAL PICK-UP

DAX-25E

DETECTOR

LASER
DIODE

PD

FOCUS

COIL

TRACKING

COIL

M902
SLED

MOTOR

M901

SPINDLE

MOTOR

VCC

LD

OPGSW

M

M

OPSTB

RF

A
B
E
F

VCC1 2V

INM4

IC401(1/2)

COIL/MOTOR

LD

PD

F+

F-

T+

T-

S+

S-

C+

C-

69

38

36

26

24

34

32

30

28

2
5

3

VLOGO4
RF41
RF4

PAPC

FO1

RO1

FO4

RO4

FO2

RO2

FO3

RO3

DRIVE

MDP

DATA

CLOCK

APC REF

CHGMNT

WAKEUP

RESET

R11

R14

17F12
18R12
40F11
41

F14

21
22

19

11SYNC
20MDS

14
13
15POWERLATCH

7

58

12

16

IC402

4

Q410

FM ANT

TUNER

SECTION

IC601

RF AMP,SERVO,DSP,

D/A CONV,D-RAM CONT

84

RFAC

88

RFDC

92

A

91

B

89

E

90

F

100

SFDR

99

SRDR

96

FFDR

95

FRDR

98

TFDR

97
3
1

TRDR

103

MDP

104

C176

102

MDS

CLOCK

23

XLAT

FOK

SCOR

R4M

27

65

32

26

SENS

SDTO

21

20

22

WDCK

28

XRST

AOUT1

AOUT2

D0
D3

A0

A10

XWE
XCAS
XRAS

XSOE

MUTE

SYSM

24

25

61

TU-L

A

TU-R

TU MUTE

RV301

IC303

11 10
12

51

56

4
.

3
.

6
.

5

116
113

.

17
15

.

13
11

.

117

2
6
1

IC602
DRAM

9

12

.

15
19

.

21

.

8

4

23

5

A0

A10

XWE
XCAS
XRAS

2
.

D0

3
.

D3

24

.

25

Q307

Q308

VCPU

8
6
1

13

3
5

TUNER

SECTION

9

2

4

TU BEEP

XTU BASS1

C

TU BASS2

XTU AVLS

KEY
HOLD
OPEN

VOLUME

Q304

14

15

19
20
17

23

1

VCPU

HP AMP

LIN

RIN

MUTE
PWR SW
BEEP

BB SW

BST NF

2
4

S804

IC302

IC304

JOG

LOUT

ROUT

ALCIN

MIX OUT

1

2

1

8

6

12ALCDET

11

10

21BIAS

2ADDOUT

24BSTOUT

N

>

x

.

S802

G-PROTECTION

S801

(OPEN/CLOSE)

J302

Q305

Q306

TUNER

SECTION

B

• Signal Path

: FM

: CD

MSDTI
MSDTO
MSCK

77

HG_XSTB_O

78

HG_GUP_O

1

IC404

RESET

66

21

XWAKE_O

RESET

8

3

70

AGCPWM

AD CHGMNT

75

XPOWLT_O

16

17

MSDTI_I

MSDTO_O

18

15

XLAT_O

MSCK_O

11

36

SCOR_I

VDD1

5

VDD

2

FOK_I

VDD2

32

12

XIN_I

79

14

XRST_O

GRSCOR_I

13

XSOE_O

AMUTE_O

IC801(2/2)

SYSTEM CONTROL

Q601
MUTE

35

RESERVE

TUNER

SECTION

74

76

XTUAUDIO_O

XCDAUDIO_O

D

AD HI DC

VCPU

TU VCC

VIN

69

30

PWRSW_O

27

BEEP_O

AD_DCINMNT

4.5V

40

AD_BATMNT

22

IC303 VCC

HOLD_I

VIN

38

INM4

VCC1_2.0V

VCC2_3.3V

28

ESP_I

OPEN_LID_I

IC401(2/2)

POWER CONTROL

6

INM4

51

VCC1

74

VCC2

73

VLG3

RF3

INM3

VIN

STNG

VLGO2

VCPU

BATM1

BATM2

CHG SW

DC IN

D311D312

78
77

65

57
61
50

60

59

CHARGE

42

48

VG

9

LS

8

Q403

ON/OFF

Q408

SWITCH

D408

VDD

1

CHARGE
SWITCH

4

IC403

Q409

D801

Q405

2

3

D406

D401

D409

Q412

+B SWITCH

Q404

SWITCH

VCC1_2.0V

VCC2_3.3V

DRY BATTRY

SIZE "AA"

(IEC DESIGNATION LR6)

2PCS 3V

J401

DC IN 4.5V

1212