Sony TL-HP90 Service manual

TL-HP90

SERVICE MANUAL

Ver 1.0 2001.04

Photo : TL-HP90

SPECIFICATIONS

Dial signal Tone, 10 pps (pulse) selectable Dimensions Approx. 3

(98 X 77 X 137.5 mm)

Mass Approx. 9.17 oz

(260 g)

Supplied accessories Telephone line code: approx. 7 ft. (2m)

Stereo audio cable (stereo mini-plug): approx. 3.5 ft. (1m)

Headset TL-DR0140 Headset hanger Directories

Photo : TL-DR0140

⁄8 X 3 1⁄8 X 5 1⁄2 inches (w/h/d)

US Model

9-873-109-11

2001D0200-1

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 24 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.

HANDS FREE TELEPHONE

Sony Corporation

Personal Audio Company

Shinagawa Tec Service Manual Production Group

TL-HP90

TABLE OF CONTENTS

SECTION 1

GENERAL

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

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

2. DISASSEMBLY

2-1. Case (Upper) , Case (Lower) ...................................... 5

2-2. Main Board ................................................................. 5

2-3. Volume Board, Key Board.......................................... 6

3. DIAGRAMS

3-1. Block Diagram ............................................................ 7

3-2. Schematic Diagram ..................................................... 8

3-3. Printed Wiring Boards – Main Section –.................... 9

4-4. Printed Wiring Boards – Key Section –.................... 10

4. EXPLODED VIEWS .................................................. 13

5. ELECTRICAL PARTS LIST................................... 14

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.

This section is extracted from instruction manual.

Identifying the part

Headset

clip

Lamp

Dialing keys

HEADSET VOLUME (TEL) control

DIAL MODE switch

RINGER LEVEL switch

LINE jack

TEL/DATA jack

AUDIO IN jack

HEADSET jack

Setting up the phone

Connect the phone

Connect the telephone line cord (supplied) to the LINE jack, and to a telephone outlet.

Connect the telephone line cord (not supplied) to the TEL/ DATA jack and to other phone or the modem if necessary.

To telephone outlet

Telephone line cord

(supplied)

Telephone line cord (not supplied)

Tip

If your telephone outlet is not modular, contact your telephone service company for assistance.

LINE jack

To LINE jack

To TEL/DATA

jack

TEL/DATA jack

Modular

Listening to music, etc. from an external equipment

Making and receiving calls

Making a call

Press (TALK)

The lamp lights up. You hear a dial tone.

Dial a phone number.

When you’re done talking, press (TALK).

The lamp goes off.

DIAL MODE switch

(REDIAL/PAUSE)

(* TONE)

(FLASH)

RINGER LEVEL switch

(HOLD)

HEADSET VOLUME (TEL)

If your dialing system is to

Set the switch

Tone T

Pulse P

Lamp

Choose the dialing mode

For the phone to work properly, select an appropriate dialing mode (tone or pulse).

Depending on your dialing system, set the DIAL MODE switch as follows:

If you aren’t sure of your dialing system

Make a trial call with the DIAL MODE switch set to T. If the call connects, leave the switch as is; otherwise, set the switch to P.

Receiving a call

When you hear the phone ring, press

(TALK)

. When you’re done talking,

press

(TALK)

again.

Additional tasks

Do this

Set the RINGER LEVEL switch to H (high), L (low) or OFF

Turn the HEADSET VOLUME (TEL) up to increase the receiver volume or down to decrease it.

(continued)

Adjust the ringer level

Adjust the receiver volume

Redialing

Press (TALK). The lamp lights up.

Press (REDIAL/PAUSE).

Notes

• If the number last dialed exceeds 31 digits for tone dialing or 32 digits for pulse dialing, the number cannot be dialed.

• The tone and pause are each counted as one digit.

Note

Pressing (HOLD) during dialing may stop transmission of the dial signal, causing you to dial the wrong phone number.

Switch to tone dialing temporarily

Put a call on hold

Switch to another call (“call waiting” service*)

Do this

Press

(* TONE)

after you’re connected. The line will remain in tone dialing until disconnected.

Press

(HOLD)

. The HOLD button lights up.

Press

(HOLD)

again to resume the conversation.

Press

(FLASH)

. Press

(FLASH)

again to return to the first caller.

* You need to subscribe to this service with your telephone company.

If you want to listen to music, etc. from the external equipment, you can do it using the headset during TALK off status.

To the headphone jack (stereo mini-plug)

e.g., cassette player, radio (not supplied)

Stereo audio cable (supplied)

Notes

•

Connect the headset

When you are listening to music, etc. with the external equipment connected to AUDIO IN jack, volume control on the headset 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.

During conversation, the voice from an external equipment cannot be heard. The sound of this unit is a monaural type.

To AUDIO IN jack

(stereo mini-plug)

1234

DIAL MODE

TL-HP90

Connect the headset plug to the HEADSET jack.

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

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

your ear.

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

Position 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 handset hanger (supplied) on the headset.

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.

Note

Do not hang the headset on as illustration

Hang the headset hanger on the hook.

RINGER LEVEL

OFF

TL-HP90

Speed dialing

You can dial with a touch of a few buttons by storing a phone number on a dialing button. You can store up to 10 different phone numbers.

Storing phone numbers

Press

(TALK).

The lamp lights up.

Press

Lamp

4 5

(REDIAL/PAUSE)

Tips

•

If you enter a wrong number, start from the beginning.

•

Use the supplied directory to write down what you stored on the speed dialing numbers.

To store a number to be dialed via Private Branch Exchange (PBX)

Before entering a phone number in step 3, do as follows:

Enter the outside line access digit (e.g. 9).

Press

(REDIAL/PAUSE).

To change a stored number

Store a new number as described above, and the old number will erased.

Making calls with speed dialing

Press

(TALK).

The lamp lights up.

Press

(SPEED DIAL).

Enter the desired speed dialing number ( The phone number stored in the speed dialing number will be

dialed.

Note

If this unit is disconnected from the line for 10 minutes or more, the stored speed dialing data is deleted from the memory.

(PGM).

Enter the phone number you want to store.

You can enter up to 16 digits for pulse dialing or 15 digits for tone dialing. Note that tone and pause are each counted as one digit.

Press

(SPEED DIAL).

Press one of the dialing buttons ( the phone number to be stored.

And the number is stored.

Press The lamp goes off.

(0) to (9)).

(0) to (9)) for

(TALK).

SECTION 2

)

DISASSEMBLY

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

Case (upper) Volume board, key board

Set

Case (lower)

2-1. CASE (UPPER), CASE (LOWER)

Connector (14 pin)

(CN401)

Connector (3 pin)

(CN101)

Main board

Case (upper)

Connector (4 pin)

(CN301)

Screw(+BTP3X10)

TL-HP90

2-2. MAIN BOARD

(CN201)

Connector (2 pin)

Screw (+BTP3X10)

Screws (+BTP2.6X8)

Holder (jack)

Case (lower)

Screw (+BTP3X10)

Screws (+BTP2.6X8

Main board

Case (lower)

TL-HP90

)

2-3. VOLUME BOARD, KEY BOARD

Screws

(+BTP2.6X8)

Volume board

Screws (+BTP2.6X8)

Key board

Knob (VOL)

Case (upper

+ 12 hidden pages