BBK BKT-39P/T RU User manual

Telephone Equipment
MODEL: BKT-39P/T RU
Basic Phone
MAINFEATURES
1. Advanced electronic circuit design
2. Durable engineering material
3. Clear voice quality system
4. Crystal ringing with volume adjustable
5. Pulse/Tone selectable.
6. Pause/Flash/Redial/Mute Button
7. Two indicators
8. Several optional color
9. International high-quality certification guarantee (ISO9001)
Service Manual

Main Features--------------------------------------------------------------------------------------------------------------------------------1
Installation-------------------------------------------------------------------------------------------------------------------------------------1
Setting the Tone/Pulse Switch -----------------------------------------------------------------------------------------------------------2
Setting the Ringer LO-HI Switch---------------------------------------------------------------------------------------------------------2
Answering a Call-----------------------------------------------------------------------------------------------------------------------------2
Making a Call---------------------------------------------------------------------------------------------------------------------------------2
Redial Button ---------------------------------------------------------------------------------------------------------------------------------2
P*T Button -----------------------------------------------------------------------------------------------------------------------------------3
PAUSE Button--------------------------------------------------------------------------------------------------------------------------------3
FLASH Button--------------------------------------------------------------------------------------------------------------------------------3
Notepaper Case -----------------------------------------------------------------------------------------------------------------------------3
Location of Controls-------------------------------------------------------------------------------------------------------------------------4
Block Diagram--------------------------------------------------------------------------------------------------------------------------------5
Explosion Diagram--------------------------------------------------------------------------------------------------------------------------6
IC Data-----------------------------------------------------------------------------------------------------------------------------------------7-10
Elements Diagram---------------------------------------------------------------------------------------------------------------------------11
PCB Diagram---------------------------------------------------------------------------------------------------------------------------------12
Replacement Parts List --------------------------------------------------------------------------------------------------------------------13-14
Troubleshooting------------------------------------------------------------------------------------------------------------------------------15
Contents

1
MAINFEATURES
1. Advanced electronic circuit design
2. Durable engineering material
3. Clear voice quality system
4. Crystal ringing with volume adjustable
5. Pulse/Tone selectable.
6. Pause/Flash/Redial/Mute Button
7. Two indicators
8. Several optional color
9. International high-quality certification guarantee (ISO9001)
INSTALLATION
a. The telephone set shall be installed in a safe place where is shady and cool, dry, ventilate and erosive-gas-free.
b. Connect one end of the coiled line to the jack of the handset, connect the other end of the coiled line to the left
jack of the telephone base set. And then plug one end of the telephone cable to the telephone line jack and plug
the other end to the wall jack or connection box provided by Telecom Company.

2
SetthePulse/ToneSwitch
If the local telecom company provides the Touch-tone dialing system, please set the switch to the Tone position;
If the local telecom company provides the Pulse dialing system, please set the switch to the Pulse position.
SettheRingerVolume
Please Set the High/Low switch to the High position for normal ringer volume and to LO for lowering the ringer
volume.
AnsweringCalls
1. When the telephone rings (the RING indicator will light up), lift the handset, the IN USE indicator will light up.
2. After talking, place the handset back on the cradle .
MakingCalls
1. Lift the handset the IN USE indicator will light up.
2. Dial the telephone number after hearing a dial tone.
3. Hang up the handset upon completing the conversation.
REDIALButton
1. If the dialed number is busy or you want to dial the last call again, press the hook and release it for a new dial
tone.
2. Press the REDIAL button and release it.
3. The last call will be redialed out automatically.
PAUSEButton
Press PAUSE button lets you insert a pause in the automatic dialing sequence where pause required. This feature is
particularly useful if the telephone set is installed as a part of a PABX system, where you must dial an access code
(such as 0) to make an outgoing call.

3
FLASHButton
Pressing the FLASH button equals to hanging up and recalling it up again.
TONEButton
If the Pulse / Tone switch on the telephone is set to Pulse position but you want to make a tone dialing, lift the
handset and press the TONE button once, then the dialing mode will switch to Tone Dialing automatically.
The telephone will turn back to Pulse Dialing mode after you hanging up the handset.
MUTEButton
Pressing and holding the MUTE button prevent the other party on the telephone line to hear your voice (In the
condition that you are going to speak to the third party around you but not willing to let the other party of the
telephone line hear your conversation). After release it, the conversation turn back normal.
VOLUMEButton
If the other party's voice is too soft, you can press VOLUME button firmly to increase and decrease.
RButton
Pressing the R button allows you to use special features of your host PBX such as transferring an extension call.
This function is valid only when you have applied for this function by your local phone company.

4
LocationofControls
RING Indicator
123
4 5 6
789
0
ABC DEF
GHI JKL MNO
PQRS TUV WXYZ
OPER
MUTE
RING
VOLUME
R
IN USE
REDIALFLASH
PAUSE
BKT 39P/T RU
-
TONE
VOLUME Button
TONE Button
MUTE Button
R Button
IN USE Indicator
REDIAL Button
FLASH Button
PAUSE Button
Dial Buttons
Handset
RING Indicator
VOLUME Button
TONE Button
MUTE Button
R Button
IN USE Indicator
REDIAL Button
FLASH Button
PAUSE Button
Hook Switch
Handset
Coiled Line
Built-in Speaker

5
BlockDiagram

6
ExplosionDiagram

7
ICData-Ringer

8
ICData-Ringer
Vcc
Tr
Csf
Rsf

9
ICData

10
ICData-PinDescription

ElementsDiagram
11

PCBDiagram
12

13
ReplacementPartsList

14
ReplacementPartsList

15
Troubleshooting
Much noise
Make sure the telephone cord line is connected firmly to the base unit and the telephone jack.
The telephone doesnít ring when you receive a call
1. Make sure the telephone cord line is connected firmly to the base unit and the telephone jack.
2. Make sure the handset is placed correctly.
There is no dial tone
1.Please check whether the telephone line is disconnected or loose.
2. Please check whether the telephone line has signal.
Can not dial out
Please check whether the TONE/PULSE switch is on a correct position and whether the telephone is connected and
plugged well.

Telephone Equipment
MODEL: BKT-39P/T RU
Basic Phone