SONY TLHA80 - Service Manual Immediate Download

TL-HA80

SERVICE MANUAL

HANDS FREE ADAPTOR

SPECIFICATIONS

US Model

9-873-108-11

2001E0200-1

Photo : TL-HA80

Photo : TL-DR0140

Sony Corporation

Personal Audio Company

Shinagawa Tec Service Manual Production Group

Ver 1.0 2001.05

Headset (TL-DR0140)

Dimension (Cord)

Approx. 7 ft. (2m)

Dimension (Plug)

3.5 mm dia.

Mass

Approx. 0.88 oz (25 g) (without cord)

Type

Open air dynamic

Driver units

30 mm dia. (CCAW Voice coil)

Sensitivity

104 dB/mW

Impedance

Maximum input power

1000 mW (IEC)

Type

Close-talking pipe microphone

Unit

Back electret condenser

Output impedance

Under 2.2 k

Closed circuit voltage level

-47 dB (0 dB = 1 V/Pa)

Design and specifications are subject to change without notice.

Power source

DC 9V from AC power adaptor

Dimensions

Approx. 3 5/8 x 3 7/8 x 6 5/8 inches (w/h/d)

(92 x 96 x 165.5 mm)

Mass

Approx. 10.58 oz

(300 g)

Supplied accessories

AC power adaptor (AC-T127)

Telephone cord: approx. 1 ft. (30cm)

Stereo audio cable (stereo mini-plug):

approx. 3.5 ft. (1m)

Headset TL-DR0140

Headset hanger

TL-HA80

Specifications ........................................................................... 1

1. GENERAL ...................................................................... 2

2. DISASSEMBLY

2-1. Cabinet (Upper) ASSY ............................................... 4

2-2. Main noard, Volume board, Jack Bords ...................... 4

3. DIAGRAMS

3-1. Block Diagram ............................................................ 5

3-2. Schematic Diagram ..................................................... 6

3-3. Printed Wiring Boards ................................................ 7

4. EXPLODED VIEWS .................................................... 8

5. ELECTRICAL PARTS LIST ..................................... 9

TABLE OF CONTENTS

SECTION 1

GENERAL

This section is extracted from

instruction manual.

Notes on chip component replacement

· Never reuse a disconnected chip component.

· Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

Setting up the unit

Connect the unit

1Connect the AC power adaptor to the DC IN jack and to an AC

outlet.

2Disconnect the handset cord from the handset jack on the phone

and connect the handset cord to the HANDSET jack of the unit.

3Open the cover on the bottom of this unit and remove the

switch securing cover.

4Turn ON the TEST switch and make sure that you can hear a

long confirmation beep from the speaker side on the handset.

If no long confirmation beep is heard from the speaker side on

the handset, see "If no long confirmation beep is heard" to select

the setting of the A and B switches.

5Turn OFF the TEST switch and put a switch securing cover.

6Close the cover on the bottom.

7Connect the telephone cord (supplied) to the phone and to the

TEL jack of the unit.

Notes

· Use only the supplied AC-T127 AC power adaptor. Do not

use any other AC power adaptor.

· Use only the supplied telephone cord. Do not use any other

telephone cord.

· Do not close the AC power adaptor. It may cause noises.

· During a power interruption, you cannot use this unit.

The components identified by mark 0 or

dotted line with mark 0 are critical for safety.

Replace only with part number specified.

TL-HA80

Tip

When an external equipment is connected to the AUDIO IN jack and the handset is not

placed on the TALK lever, the sound from the external equipment is connected to the

headset in either case that the handset is in the on-hook or off-hook status on the main

body of the phone.

Notes

· If your phone's handset does not stay on the TALK lever

and easily drops from it, pull up the holder and place the

handset as shown in the figure.

· Howling noise might occur depending on the connected

phone. In this case, lower the receiver HEADSET

VOLUME (TEL) control to a suitable position before use.

Additional tasks

Do this

Turn the HEADSET VOLUME (TEL) up to

increase the receiver volume or down to decrease it.

Put a coin, etc. in the slot of the MIC VOLUME

control, and turn right or left to adjust.

Adjust the microphone volume control to the

suitable position by asking another party on the

line to check.

Press

to disable the microphone. The

button lights up.

Press

again to cancel.

Adjust the receiver volume

Adjust the microphone

volume

Mute your voice

If no long confirmation beep is heard

1 Turn ON the TEST switch.

2 Set the A switch to the position (1 to 4) where a long

confirmation beep is heard.

If this doesn't work and no long confirmation beep is heard yet,

turn the B switch to 2 and then set the A switch to the position

where a long confirmation beep is heard.

Notes

· Depending on the handset, a long confirmation beep is heard from the microphone

side. Be sure to set the A and B switches to the position where a long confirmation

beep is heard from the speaker side.

· If you have connected this unit to another phone, follow the instructions described

in "Connect the unit".

Listening to music, etc. from an external equipment

If you want to listen to music, etc. from the external equipment, you can do

it using the headset during handset on-hook status.

Notes

· When you are listening to music, etc. with the external equipment connected to

AUDIO IN jack, HEADSET VOLUME (TEL) is not available. Volume control is

available with the connected equipment.

Also, turning off the sound from the connected equipment can be done either by

shutting down the power for the external equipment or by pulling out the stereo

audio cable from AUDIO IN jack on this unit.

· The sound of this unit is a monaural type.

Connect the headset

1Connect the headset plug to the HEADSET jack.

2Place the earpiece support unit behind the top of your ear.

3Adjust the length of the headband so that the headset fits on

your ear.

4The earpiece can be rotated so it fits comfortably over either ear.

5Position the headset microphone so that it is placed near the

mouth.

Notes

· Listening with headset at high volume may affect your hearing.

· The earpad may deteriorate due to long-term storage or use. If you need to

replacing the earpad, it can be purchase separately (EP-Q1).

Tip

You can use the headset on either your right or left ear.

Using the headset hunger

The headset can be hung on the hook (supplied) by mounting the headset

hanger (supplied) on the headset.

Switching handset/headset

conversation

The handset/headset conversation can be switched by placing the handset

on the TALK lever.

When the handset is placed on the TALK lever: Headset conversation mode

When the handset is not placed on the TALK lever: Handset conversation

mode

1 Attach the headset hanger to the headset from the slit as

illustration

Be sure to insert the protrusion of the headset hanger to the

projection of the headset.

2 Hang the headset hanger on the hook.

Note

Do not hang the headset on as illustration

TL-HA80

SECTION 2

DISASSEMBLY

2-1. CASE (UPPER)

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

2-2. MAIN BOARD, VOLUME BOARD, JACK BOARD

Case (upper)

Main board, Volume board, Jack board

Set

1 Screw (+BVTP3X10)

1 Screws (+BVTP3X10)

Case (upper)

Case (lower)

7 Screws (+BVTP2.6X8)

5 Screw (+BTP2.6X8)

6 Audio board

9 MJ102

Case (lower)

2 Knob (MIC)

1 Knob (VOL)

7 Screws (+BVTP2.6X8)

3 Screws (+BTP2.6X8)

MJ101

Spred 0claws and

put qaMJ101 off from

the case (lower)

4 Volume board

0 Claws

Main board

Case (upper)

TL-HA80

3-1. BLOCK DIAGRAMS

· Signal path.

: RX

: TX

SECTION 3

DIAGRAMS

J301

MJ102

MJ101

F101

F102

F103

T102

D201

D202

S201

J103

T101

CDS1

RY101

J105

RV202

RV201

S105

D104

JW103

JW203

S101

D106

RY102

RY103

250V

500mA

250V

500mA

250V

500mA

DC IN 9V

CLR

HEADSET

HANDSET

TEL

OFF

S104

S102

S103

TEST MODE

OFF

AMP

HEADPHONE

MUTING

(TEL)

HANDSET VOLUME

MUTING

(LINE)

MIC VOLUME

+5V REG

LED

DRIVER

MUTING

HOLD

ANALOG

SWITCH

RELAY

DRIVER

LED DRIVER

TALK

(HANDSET)

(HEADSET)

RELAY

DRIVER

Q106

Q109

Q108

/BUFFER

DELAY

D109

DELAY

IC101

MIC AMP

Q101,102

+5V

IC102

+5V

ANALOG

SWITCH

IC105

Q112

MUTE

Q110,111

LEVEL DETECT

IC103

AUDIO IN

+5V

IC104

+5V

DELAY

SIGNAL

TEST

GENERATOR

Q104,105

+5V

D107

RY101-2

RY101-1

RY102-1

RY103-1

Q107

VDD

Q103

S103-A

S103-B

S103-C

S103-D

TEST MODE

S104-D

S104-C

S104-B

S104-A

+5V

D108

VDD