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9

When charging with Charger, the charge current is as follows:
DC+(5.5V) 

→ F1(Charger)→ CHARGE+(Charger) → CHARGE+(Handset) → CN4 → L1 → Q1 → F2 → IC1 → IC2 →

BATTERY+... BATTERY- 

→ L2 → CN4 → CHARGE-(Handset)→ CHARGER-(Charger) → DC-(GND)

When charging without Charger, the charge current is as follows:
DC+(5.5V) 

→ JK1 → D1 → F2 → IC1 → IC2 → BATTERY+...

BATTERY-

→JK1→DC-(GND)

In this way, the BBIC on Handset detects the fact that the battery is charged.
The charge current is controlled by IC2 of Handset.
Refer to Fig.102 in Power Supply Circuit (P.8).

Fig.102

“Battery Low” and “Power Down” are detected by BBIC which check the voltage from battery.
The detected voltage is as follows;

• Battery Low

Battery voltage: V(Batt)   3.5 V ± 50 mV

The BBIC detects this level and "

" starts flashing.

• Power Down

Battery voltage: V(Batt)   3.3 V ± 50 mV
The BBIC detects this level and power down.

• Establish and control the connection with GSM network
• SIM card interface
• Transmitter/Receiver

The voice signal input from MIC is coded and modulated to the GSM RF signal (GSM900 band: 880-915MHz/DCS1800
band:1710-1785MHz) in BBIC(IC1). GSM RF signal is amplified and radiated from antenna.
The GSM RF signal (GSM900 band: 925-960MHz/DCS1800 band: 1805-1880MHz) which is input from antenna is input to BBIC
(IC1) as shown in Block Diagram (Handset).
In IC1, the RF signal is demodulated.The voice data is decoded to analog audio and output through receiver or speaker.

• Keypad Interface
• Color display are supported
• Keypad and display backlight supported
• Speaker driver
• Receiver driver
• Headset driver
• Microphone input
• Charger circuitry for NiMH cells

The hands-free loudspeaker at SP+ and SP- is used to generate the ring alarm.

GND

GND

F1

GND

C8

1u

16

VMIC

GND

GND

GND

GND

GND

GND

GND

C9

10uF

GND

GND

GND

GND

GND

C10

0.1u

VIO

C1

22u

GND

Q1

G

D

S

GND

C11

22u

F2

C13

(   )

GND

CN4

1

2

GND

C69

33p

D8

GND

GND

TP-DCIN

GND

D1

TH

JK1

3
4
2

R10

10k

R4

100k

R6

470k

R1 3.6k

R2

7.5k

R3

82k

Q3

Q2

1 VCC
2 ROSC
3 LED
4 GND
5 VDD

6

TH

7

TMRCNT

8

RICHG

9

VSENSE

10

BAT

11

FIN

1

VO

2

NC1

3

GND

4

CS

5 CONT
6 NC2
7 NC3
8 VIN
9

FIN

L1

L2

D2

L3

CN5

1

2

3

CHARGE

Terminal

BATTERY

2.0A

)

10

The power supply is as shown.

TP1

TP2

J1

AC Adaptor

FUSE
F1

11

SIGNAL ROUTE

IN

OUT

VOICE TX
(to GSM network)

(HANDSET)
MIC ------- R32 - C24 - R23 - MOD1(40) ------ MOD1(44) ----- C5 - L4 - ANTENNA to GSM Network

         ----R33 - C25 - R24 - MOD1(39) ---

VOICE RX
(from GSM network)

(HANDSET)
ANTENNA - L4 - C5 ------------------ MOD1(44) ----- MOD1(46) ------ RECEIVER

MOD1(47)

SP-PHONE TX
(to GSM network)

(HANDSET)
MIC ------- R32 - C24 - R23 - MOD1(40) ------ MOD1(44) ----- C5 - L4 - ANTENNA to GSM Network

----R33 - C25 - R24 - MOD1(39) ---

SP-PHONE RX
(from GSM network)

(HANDSET)
ANTENNA - L4 - C5 ------------------ MOD1(44) ----- MOD1(48) - SP (+)

HEADSET TX
(to GSM network)

(HANDSET)
JK1(2) ----- R28 - C35 - MOD1(36) ----- MOD1(44) ----- C5 - L4 - ANTENNA to GSM Network

HEADSET RX
(from GSM network)

(HANDSET)
ANTENNA - L4 - C5 -------------- MOD1(44) - MOD1(59) - C37 - JK1(5)

SMS TX
(to GSM network)

(HANDSET)
KEY input - MOD1(17,18,19,20,21,22,23,24,25,26) ----- MOD1(44) ----- C5 - L4 - ANTENNA to GSM Network

SMS RX
(from GSM network)

(HANDSET)
ANTENNA - L4 - C5 ----------------- MOD1(44) ----- MOD1(7,8,9,10,11) - LCD

SIGNAL

ROUTE

L6           L9 - ANTENNA to GSM Network

C14

ANTENNA - L9

C14

L6

L6           L9 - ANTENNA to GSM Network

C14

L6           L9 - ANTENNA to GSM Network

C14

MOD1(49) - SP (-)

ANTENNA - L9

MOD1(35)

ANTENNA - L9

ANTENNA - L9

L6           L9 - 

C14

C14

L6

C14

L6

C14

L6

12

Refer to the Operating Instructions.

You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

Refer to the Operating Instructions.

You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

Refer to the Operating Instructions.

You can download and refer to the Operating Instructions (Instruction book) on TSN Server.

Items

Contents

Battery

You could use other rechargeable batteries sold in a market, but the unit is not guaranteed to work 
properly.

The battery strength may not be indicated correctly if the battery is disconnected and connected again, 
even after it is fully charged. In that case, by recharging the battery as mentioned in the Operating 
Instructions, you will get a correct indication of the battery strength.