Marantz SR 7100 DC Service Manual

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MARANTZ I DESIGN AND SERVICE

Using superior design and selected high grade components, MARANTZ Company has created the ultimate in stereo sound.
Only original MARANTZ parts can insure that your MARANTZ product will continue to perform to the specifications for
which it is famous. _

Parts for your MARANTZ stereo are generally available within 72 hours throughout the nation via a toll-free line to our
National Parts Depot in California. The sales professionals who take your call immediately refer to their own desk top com»
puter terminal and can quickly determine the availability and price information you require If, for some reason, your order
should exceed our available stock, we usually can instantly provide an alternate replacement part or current delivery infor-
mation. When the order is placed and confirmed, the computer simultaneously generates hard copy orders at the distribu
tion center. As hard copies come directly from the computer to the national parts depot, your requested stock is assembled
and prepared for shipment and placed on the first available carrier for delivery to you.

ORDERING PARTS

Phone orders will eliminate mail delays, and we encourage the use of this method. If you order by mail, use MARANTZ parts
order forms which are available from our National Parts Depot located at the following address:

SUPERSCOPE NATIONAL PARTS DEPARTMENT
20525 Nordhoff Street
Chatsworth, California 91311
Phone: 1'800-423-5108
1213-9989333

The following information must be supplied to eliminate delays in processing your order:

, Complete address.

. Complete part numbers.

. Complete description of parts

, Model number for which part is required (indicate MARANTZ).
. Account number (for account customers only).

0143de

Direct consumers will be provided with the current retail price quotation on available parts in order to advise them of the cost
of the parts and shipping,

OVERSEAS PARTS ORDERING
Parts may also be ordered from the following overseas addresses:

U.S.A. CANADA AUSTRALIA JAPAN
Marantz Company! Inc. Superscope Canada, Ltd. Marantz Australia Marantz Japan, inc.
National Service Dept. 3710 Nashua Drive 32 Cross Street 3622 Kamitsuruma
P.0_ Box 577 Mississauga Brookvale, NSW 2100 Sagamihara-shi
Chatsworth, CA 91311 Ontario, Canada L4V1M5 Australia Kanagawa, Japan
U.S.A. '

EUROPE

Marantz Europe SA. Marantz France Marantz Audio U,K., Ltd. Marantz Germany GMBH
326 Avenue Louise Bte 32 4 rue Bernard Palissy 193 London Road Max~Planck-Strasse 22
1050 Brussels 92600 Asnieres Staines, Middlesex 6072 Dreieich
Belgium France United Kingdom West Germany
Marantz Belgium Marantz Svenska AB. Marantz Norske A.S,
45 rue Auguste Van Zande Franzengatan 6 Refstadalleen 13
1080 Brussels 10425 Stockholm Oslo 5
Belgium Sweden Norway

All of the above locations are fully equipped to take care of your total service needs. Because various countries have differing
configuration requirements, it is necessary that you contact the service facility in your particular country. In the event that
there is no service location listed for your country, please contact the nearest facility for the necessary assistance,

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(3) Functions of terminals

Pin Pin t Pin Pin .
Code Symbol Functlon Code Symbol Function
1 V55 Ground terminal 22 E00 Data output terminal for BCD driver
2 C011 LW source control output terminal, 23 E01 SN74LS42 Preset memory display
H level output 24 502 LED (M1 - M8) and PHONO, AUXl
3 0010 MW source control output terminal, 25 E03 and AUX 2 source LED control terminal
H level output .
. 26 TST Test terminal. Connected to ground
FM source control output terminal, g .
4 C09 H level output Reset termlnal. When power is supplied
. - to the micro computer, the level is L.
5 C08 AC outlet output termlnal, H level 27 HST in the normal condition, the level is
output H.
6 C07 Mitt? output terminal, H level To use the SNSl for counter mode,
ou p 28 CSLCT connect to ground. (For the models
7 C06 Data latch clock output termlnal for without clock, connect to ground.)
MN6147 Lock detection input terminal for
8 CO5 . ~ . PLL system. The MN6147 ALDO
9 CO4 Frequency display digit output and signal is applied to this terminal via
SWltCh and V matrlx 503" port. 29 SNSO the filter. This terminal is used for
10 C03 The 508" '5 low level. auto up/down station seek.
11 (:02 C05. i . G1, CO4. . . G2, C03 . . . G3, Lock mode - H level input
12 (302- . ~ 54' C01~--G5, C00 . -- ' Unlock mode - L level input
001 (331, 632 .
13 C00 Reference clock (250 Hz) input
30 SNSl terminal. Input from MN6147 0K2.
14 A13 For the models without clock, connect
' d.
15 A'2 Switch and key matrix input terminal. to groun
16 All The input signal is always supplied 31 D00
17 A10 from the micro computer standard 32 901
routine.
- 33 D02
20 8'1 MN6l47 data output and display
21 BiO 34 003 segment output terminal.
Station detector signal (tuning 35 D04 The segment scan IS 10W.
detector signal) input terminal. 35 905
Checks the input only in the auto
Up/down station seek. 37 DOG
18 Bi3 Station detector signal - H level input 38 D07
magistatlon detector signal _ L level 39 VDD Power supply terminal (+5V 110%)
In the normal condition, the muting Micro computer Clock (5265 kHZ)
is released regardless of the station 40 03C INDUt terminal.
detector signal, Input from MN6147 CKl.
Power outage (battery back-up)
detection terminal. in the battery
back-up mode, the output of the micro
computer becomes low and only the
19 Bi2 clock is counted. When the power is
recovered, the unit is set to OFF mode
(OFF key on condition) and display
indicates the current time.
Battery back~up mode - L level input
Normal power supply - H level input