Table of Contents
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TL-HP90
TABLE OF CONTENTS
Specifications ........................................................................... 1
1. GENERAL
...................................................................... 2
2-1. Case (Upper) , Case (Lower) ...................................... 5
2-2. Main Board ................................................................. 5
2-3. Volume Board, Key Board .......................................... 6
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
.................................................. 13
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.
2
................................... 14
SECTION 1
GENERAL
Identifying the part
Headset
LINE jack
TEL/DATA jack
AUDIO IN jack
Setting up the phone
Connect the phone
1
Connect the telephone line cord (supplied) to the LINE jack,
and to a telephone outlet.
2
Connect the telephone line cord (not supplied) to the TEL/
DATA jack and to other phone or the modem if necessary.
LINE jack
To telephone
outlet
1
Telephone line cord
(supplied)
To LINE jack
2
Telephone line cord
(not supplied)
Tip
If your telephone outlet is not modular, contact your telephone
service company for assistance.
This section is extracted from
instruction manual.
Lamp
Dialing keys
HEADSET VOLUME
(TEL) control
DIAL MODE switch
RINGER LEVEL
switch
clip
HEADSET jack
To TEL/DATA
jack
TEL/DATA jack
Modular
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