Kenwood GE 810 Service Manual

Page 1

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STEREO GRAPHIC EQUALIZER

GE-81O KENWOOD

SERVICE MANUAL

(9 1987710 PRINTED IN JAPAN
Bin-329100 (G) 1214

62.70_22

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(307-1763-04)

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Slide switch (E30)

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* Refer to parts list on page 38.

Page 2

E-810.

4 CONTENTS

'coNTROLs AND INDICATORS
, SYSTEM CONNECTIONS ......
OPERATING INSTRUCTIONS
MEMORY FUNCTION .......
DISPLAY MODE ...............................
WHEN USED WITH A MIDI SYSTEM .
DISASSEMBLY FOR REPAIR
BLOCK DIAGRAM ...................
CIRCUIT DESCRIPTION
FUNCTIONS OF COMPONENTS ........................................... 10

2
4
5
6
7
7
8
9

MICROPROCESSOR OPERATION SPECIFICATION
1. GRAPHIC EQUALIZER FUNCTIONS ...................
2. MICROPROCESSOR TERMINAL DESCRIPTION
3. SERIAL DATA COMMUNICATION .....................

PC BOARD (Component side view)
PC BOARD (Foil side view) .
SCHEMATIC DIAGRAM
EXPLODED VIEW ...........
PARTS LIST ......
SPECIFICATIONS

Back cover

CONTROLS AND INDICATORS

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0 POWER switch
Press to turn the power ON. Press it again to set the unit
to STANDBY mode,
' In STANDBY mode, all functions, except for the
memory backup function, are turned OFF.

0 E0 switch

Press to apply the sound equalizer effect.

9 M.MODE select switch (LIR)

This switch is used to select the memory mode between
MANUAL memory mode and fixed memory mode
(REFERENCE).

0 M1 to M5 keys (L/Rl
Press one of the M1 to M5 keys to memorize the
response pattern.

0 MEMORY keys (L/Rl
Press this key when memorizing the response pattern set
by the equalizer level controls.

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(6) Equalizer level controls (LEFT/RIGHT)

Each time any of the upper keys is pressed, the equalizer
level is raised by one step to boost the response. Each
time any of the lower keys is pressed, to attenuate the
response, the equalizer level is lowered by one step.
When a key is kept pressed for more than 1/2 second,
the equalizer level is changed up or down at high seed.

0 FLAT switch

Press to set all the equalizer levels to flat.

9 REVERSE switch

When this switch is pressed, the response which is
boosted or attenuated by the equalizer level controls is
reversed.

0 SA (Spectrum Analyzer) LEVEL control
lL/Rl -
These control knobs are used to control the display level
of the spectrum analyzer. Turn clockwise to increase the
display level and turn counterclockwise to decrease it.

Page 34

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CAUTION: For continued safety, replace safety critical compo-
nents only with manufactures recommended parts (refer to parts
list), A Indicates safety critical components. To reduce the risk
of electric shock, leakage-current or resistance measurements
shall be carried out (exposed parts are acceptably insulated from
the supply circuit) before the appliance is returned to the
customer

DC Joltages are a:
voltmeter with no 5
due to variatons be
units,