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EN-1174N-A/B/C
Published by Service Dept.
Printed in Japan
Clarion Co., Ltd.
22-3, Shibuya 2-chome, Shibuyaku, Tokyo, 150-8335 Japan
Service Dept.- 50 kamitoda,Toda-shi,Saitama,335-8511 Japan Tel: 048-443-1111
FAX:048-433-6996
298-5901-00 Mar.2001 P
Service Manual
NISSAN Automobile Genuine
Interface Box
EN-1174N-A
(Genuine No.28046 3W700)
EN-1174N-B
(Genuine No.999U8 VM000S6)
EN-1174N-C
(Genuine No.28046 3W710)
SPECIFICATIONS
Voltage gain:
2.0
3dB
T.H.D.:
less than 0.1
S / N:
over than 80dB
Cross talk:
over than 65dB
Power supply voltage:
13.2V
Ground:
Negative ground
Current dissipate:
less than 30mA
External dimensions(mm):
130.4(W)
35.2(H)
60.4(D)
Weight:
550g
Specifications and design are subject to change without
notice for further improvement.
COMPONENTS
EN-1174N-A/B/C
Main unit
1
NOTE
We cannot supply PWB with component parts in prin-
ciple. When a circuit on PWB has failure , please repair
it by component parts base. Parts which are not men-
tioned in service manual are not supplied.
To engineers in charge of repair or
inspection of our products.
Before repair or inspection, make sure to follow the
instructions so that customers and Engineers in charge
of repair or inspection can avoid suffering any risk or
injury.
1. Use specified parts.
The system uses parts with special safety features
against fire and voltage. Use only parts with equivalent
characteristics when replacing them.
The use of unspecified parts shall be regarded as re-
modeling for which we shall not be liable. The onus of
product liability (PL) shall not be our responsibility in
cases where an accident or failure is as a result of un-
specified parts being used.
2. Place the parts and wiring back in their original posi-
tions after replacement or re-wiring.
For proper circuit construction, use of insulation tubes,
bonding, gaps to PWB, etc, is involved. The wiring con-
nection and routing to the PWB are specially planned
using clamps to keep away from heated and high volt-
age parts. Ensure that they are placed back in their origi-
nal positions after repair or inspection.
If extended damage is caused due to negligence during
repair, the legal responsibility shall be with the repairing
company.
3. Check for safety after repair.
Check that the screws, parts and wires are put back
securely in their original position after repair. Ensure for
safety reasons there is no possibility of secondary
ploblems around the repaired spots.
If extended damage is caused due to negligence of re-
pair, the legal responsibility shall be with the repairing
company.
4. Caution in removal and making wiring connection to the
parts for the automobile.
Disconnect the battery terminal after turning the ignition
key off. If wrong wiring connections are made with the
battery connected, a short circuit and/or fire may occur.
If extensive damage is caused due to negligence of re-
pair, the legal responsibility shall be with the repairing
company.
Model
Model
Model


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EN-1174N-A/B/C
5. Cautions regarding chips.
Do not reuse removed chips even when no abnormality
is observed in their appearance. Always replace them
with new ones. (The chip parts include resistors, capaci-
tors, diodes, transistors, etc). The negative pole of tan-
talum capacitors is highly susceptible to heat, so use
special care when replacing them and check the opera-
tion afterwards.
6. Cautions in handling flexible PWB
Before working with a soldering iron, make sure that the
iron tip temperature is around 270
. Take care not to
apply the iron tip repeatedly(more than three times)to
the same patterns. Also take care not to apply the tip
with force.
7. Turn the unit OFF during disassembly and parts replace-
ment. Recheck all work before you apply power to the
unit.
EXPLODED VIEW
PARTS LIST
NO.
PART NO.
DESCRIPTION
Q'TY
NO.
PART NO.
DESCRIPTION
Q'TY
9
10
14
11
13
17
16
12
15
2
3
7
5
5
5
4
8
5
6
1
1
300-7887-00
MTG BRACKET only N-C
1
2
716-1561-00
IT SCREW
2
3
300-7852-00
MTG BRACKET without N-C
1
4
855-1448-00
DIN CORD
1
5
714-2605-81
MACHINE SCREW
6
6
311-1816-01
LOWER CASE
1
7
310-1726-00
UPPER CASE
1
286-9023-47
SET PLATE for N-A
8
286-9023-55
SET PLATE for N-B
1
286-9023-67
SET PLATE for N-C
9
039-1777-00
MAIN PWB
1
(WITHOUT COMPOMENTS)
10
074-0850-06
OUTLET SOCKET
1
11
074-1218-00
OUTLET SOCKET
1
12
009-0621-07
CHOKE
1
13
076-0312-08
PLUG
1
14
074-0850-08
OUTLET SOCKET
1
15
714-2605-81
MACHINE SCREW
1
16
331-3085-00
CONNECTOR HOLDER
1
17
331-2634-00
HOLDER
1


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