Kenwood T-91 User Manual

COMPUTER CONTROLLED AM/FM STEREO
SYNTHESIZER TUNER ‘<= NAVLOl@) BD)
T-91/91L
SERVICE MANUAL
© 1987-10 PRINTED IN JAPAN
tom bacicr-ten elem (©) m-401c10)
4329
Dressing plate
(BO3-2324-04)
Panel*
Metallic
cabinet"
(A20-)
{AO
1-)
KENWOOD
a
Foot
(JO2-0174-04) x 4
Phono
jack
(2P)
Slide
switch’
(E13-02
17-05)
(S31-2115-05)
Screw
terminal
board*
AC
outlet
*
(E20-) (E03-)
B Power cord bushing
(J42-0083-05)
H AC power cord”
Slide
switch*
Miniature
phone
jack
(E30-)
(S31-2075-05) x 3 (E11-0168-05)
* Refer to parts list on page 46.
Photo is T-91.
4304

Kenwood T-91 Specifications

General

Brand	Kenwood
Model	T-91
Category	Tuner
Language	English

Summary

Disassembly for Repair

Disassembly Procedure

Step-by-step guide for dismantling the tuner unit and its components.

Block Diagram

Circuit Description

Tuner Unit Component Functions

Description of components within the tuner unit.

Display Unit Component Functions

Description of components within the display unit.

Front-End Unit Component Functions

Description of components within the front-end unit.

IC1 Microprocessor Details

Detailed description and terminal connections for IC1.

IC3 PLL Synthesizer Details

Description of IC3, the PLL frequency synthesizer.

Data Input and Timing

Explanation of data input signals and timing for LSI.

Time Adjustment

Adjusting the Present Time

Procedure for setting the tuner's internal clock.

Listening to Broadcasts

Auto and Manual Tuning Methods

Methods for tuning radio broadcasts.

Direct Tuning Method

Instructions for tuning by directly entering frequency.

Presetting Broadcast Stations

Storing desired stations into memory for quick access.

Preset Scan Operation

How to scan through stored preset stations.

Selecting Preset Channels

Method for choosing preset station groups and numbers.

Last Channel Memory Function

Recalling the previously tuned channel.

Station Name Presets

Inputting Station Name Characters

Guide to entering alphanumeric characters for station names.

Changing Station Name Example

Step-by-step example of modifying a stored station name.

Timer Functions

Timer Play with Tuner

Using the tuner's timer for automatic playback.

Timer Play with CD Player

Using the timer to control CD player playback.

Timer Play with Cassette Deck

Using the timer to control cassette deck playback.

Timer Recording of Broadcasts

Using the timer to record radio broadcasts.

Timer Program Setup

Setting the Timer Program

Procedure for programming ON and OFF times for timer.

Adjustment Procedures

FM Section Alignment

Adjustment points and settings for the FM tuner section.

AM-MW Section Alignment

Adjustment points and settings for AM/MW tuner sections.

LW Section Alignment

Adjustment points and settings for the LW tuner section.

PC Board Component Layout

Tuner Unit Component Layout

Component layout diagram for the tuner unit.

Front-End Unit Component Layout

Component layout diagram for the front-end unit.

Display Unit Component Layout

Component layout diagram for the display unit.

PC Board Foil Side View

Display Unit Foil Layout

Foil layout diagram for the display unit.

Front-End Unit Foil Layout

Foil layout diagram for the front-end unit.

Tuner Unit Foil Layout

Foil layout diagram for the tuner unit.

Exploded View

Parts List

Specifications

FM Tuner Specifications

Technical specifications for the FM tuner.

MW Tuner Specifications

Technical specifications for the MW tuner.

LW Tuner Specifications

Technical specifications for the LW tuner.

General Specifications

Overall technical specifications for the tuner.