Kenwood KRC-679R Service Manual
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CASSETTE RECEIVER
KRC-609
QQ
3 7 63 1515 0
KRC-679R/RY
KRC-781R/789
SERVICE MANUAL
KRC-609 (K)
KRC-609
CR2
47W x 4
LOUD
B NR
SCAN
KRC-781R (M)
KRC-781R
CR2
K3I
47W x 4
LOUD
B NR
SCAN
TE
L 13942296513
The following reference numbers with accessory parts are the same reference numbers
used on EXPLODED VIEW and PARTS LIST.
201
277
www
.
PROG
PWR OFF
AUD
B.S/RDM
REP
MTL/M.RDM
AUTO
DISP
AME
NAME.S
PROG/PTY
PWR OFF
AUD
B.S/RDM
REP
MTL/M.RDM
T I
DISP
VOL ADJ
NAME.S
DC1
261
780
276
x
ao
u163
y
i
2 9
8
KRC-679R/RY (E)
KRC-679R
CR2
K3I
47W x 4
LOUD
B NR
KRC-789 (M)
KRC-789
CR2
47W x 4
Q Q
LOUD
B NR
3
6 7
1 3
1 5
DC2
222
x2
259
co
RC1
.
9 4
2 8
© 2001-4 PRINTED IN KOREA
B51-7793-00 (K) 3402
PROG/PTY
AUD
SCAN
B.S/RDM
REP
MTL/M.RDM
T I
DISP
NAME.S
VOL ADJ
PROG
AUD
SCAN
B.S/RDM
REP
MTL/M.RDM
AUTO
DISP
AME
NAME.S
0 5
8
2 9
9 4
2 8
278
216
m
9 9
PWR OFF
PWR OFF
9 9

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Table of Contents
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Summarization of Contents

COMPONENT DESCRIPTION
SYNTHESIZER UNIT (X14-xxxx-xx)
Lists components within the synthesizer unit, detailing their function and operation.
SWITCH UNIT (X13-xxxx-xx)
Lists components within the switch unit, detailing their function and operation.
MICROCOMPUTER'S TERMINAL DESCRIPTION
(X14-) IC1: SYSTEM µ-COM
Details the terminals of the SYSTEM µ-COM microcomputer, including port name, I/O, function, and operating conditions.
TEST MODE
Test Mode Operations and Status
Details entering, exiting, initial status, and specific display scenarios within the test mode.
Test Mode Specifications and Procedures
Covers CD receiver test mode specs, audio adjustments, menu parameters, and backup current measurement.
Security-Related Information
Forced Power ON Mode
Enables forced power ON for a limited time, even with security approved.
Security Code Registration
Method for registering or replacing the security code for the unit.
Security Code Clearing
Procedure for clearing the security code, specifically for K Type models.
Mask Key Writing and Initialization
Instructions for writing, initializing, and clearing the Mask key (security) data.
ADJUSTMENT
Balance and Fader Adjustment
Details the procedure for adjusting balance and fader settings for the unit.
PARTS DESCRIPTIONS
Capacitors
Details capacitor types, temperature coefficients, voltage ratings, and physical dimensions.
Resistors
Describes resistor types, shapes, dimensions, wattage, and tolerance characteristics.

Table of Contents