Marantz SR-2400 Service Manual
Service
STANDBY
Time
Volume
PHONES
SR2400
SR2400 /
K1S/N1S/S1S
Manual
STANDBY
AV Surround Receiver
Time
/
Volume
PHONES
SR2400
SR2400
TABLE OF CONTENTS
SECTION PA GE
1. TECHNICAL SPECIFICATIONS ............................................................................ 1
2. TECHNICAL DESCRIPTION................................................................................. 2
3. SERVICE MODE ................................................................................................... 3
4. SERVICE PROCEDURE ....................................................................................... 3
5. BLOCK DIAGRAM................................................................................................. 5
6. SCHEMATIC DIAGRAM ........................................................................................ 7
7. PARTS LOCATION .............................................................................................. 21
8. IC DATA................................................................................................................ 29
9. EXPLODED VIEW AND PARTS LIST ................................................................. 39
10.ELECTRICAL PARTS LIST .................................................................................. 42
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
SR2400
Part no. 33AW855010
First Issue 2003.11
ecm
MARANTZ DESIGN AND SERVICE
Using superior design and selected high grade components,
Only original
MARANTZ
parts can insure that your
MARANTZ
MARANTZ
product will continue to perform to the specifi cations for which
company has created the ultimate in stereo sound.
it is famous.
Parts for your
MARANTZ
ORDERING PARTS :
equipment are generally available to our National Marantz Subsidiary or Agent.
Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specifi ed.
The following information must be supplied to eliminate delays in processing your order :
1. Complete address
2. Complete part numbers and quantities required
3. Description of parts
4. Model number for which part is required
5. Way of shipment
6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.
USA
MARANTZ AMERICA, INC
1100 MAPLEWOOD DRIVE
ITASCA, IL. 60143
USA
PHONE : 630 - 741 - 0300
FAX : 630 - 741 - 0301
AMERICAS
SUPERSCOPE TECHNOLOGIES, INC.
MARANTZ PROFESSIONAL PRODUCTS
2640 WHITE OAK CIRCLE, SUITE A
AURORA, ILLINOIS 60504 USA
PHONE : 630 - 820 - 4800
FAX : 630 - 820 - 8103
EUROPE / TRADING
MARANTZ EUROPE B.V.
P. O. BOX 8744, BUILDING SILVERPOINT
BEEMDSTRAAT 11, 5653 MA EINDHOVEN
THE NETHERLANDS
PHONE : +31 - 40 - 2507844
FAX : +31 - 40 - 2507860
AUSTRALIA
TECHNICAL AUDIO GROUP PTY, LTD
43-53 Bridge Rd.,
STANMORE NSW 2048
AUSTRALIA
PHONE : +61 - (0)2 - 9519 - 0900
FAX : +61 - (0)2 - 9519 - 0600
CANADA
LENBROOK INDUSTRIES LIMITED
633 GRANITE COURT,
PICKERING, ONTARIO L1W 3K1
CANADA
PHONE : 905 - 831 - 6333
FAX : 905 - 831 - 6936
HONG KONG
Jolly ProAudio Broadcast Engineering Ltd.
UNIT 2, 10F, WAH HUNG CENTRE,
41 HUNG TO ROAD, KWUN TONG, KLN.,
HONG KONG
PHONE : 852 - 21913660
FAX : 852 - 21913990
AUSTRALIA
QualiFi Pty Ltd,
24 LIONEL ROAD,
MT. WAVERLEY VIC 3149
AUSTRALIA
PHONE : +61 - (0)3 - 9543 - 1522
FAX : +61 - (0)3 - 9543 - 3677
NEW ZEALAND
WILDASH AUDIO SYSTEMS NZ
14 MALVERN ROAD MT ALBERT
AUCKLAND NEW ZEALAND
PHONE : +64 - 9 - 8451958
FAX : +64 - 9 - 8463554
JAPAN
MARANTZ JAPAN, INC.
35- 1, 7- CHOME, SAGAMIONO
SAGAMIHARA - SHI, KANAGAWA
JAPAN 228-8505
PHONE : +81 42 748 1013
FAX : +81 42 741 9190
Technical
THAILAND
MRZ STANDARD CO., LTD
746 - 754 MAHACHAI ROAD.,
WANGBURAPAPIROM, PHRANAKORN,
BANGKOK, 10200 THAILAND
PHONE : +66 - 2 - 222 9181
FAX : +66 - 2 - 224 6795
TAIWAN
PAI- YUING CO., LTD.
6 TH FL NO, 148 SUNG KIANG ROAD,
TAIPEI, 10429, TAIWAN R.O.C.
PHONE : +886 - 2 - 25221304
FAX : +886 - 2 - 25630415
SHOCK, FIRE HAZARD SERVICE TEST :
SINGAPORE
WO KEE HONG DISTRIBUTION PTE LTD
130 JOO SENG ROAD
#03-02 OLIVINE BUILDING
SINGAPORE 368357
PHONE : +65 6858 5535 / +65 6381 8621
FAX : +65 6858 6078
MALAYSIA
WO KEE HONG ELECTRONICS SDN. BHD.
2ND FLOOR BANGUNAN INFINITE CENTRE
LOT 1, JALAN 13/6, 46200 PETALING JAYA
SELANGOR DARUL EHSAN, MALAYSIA
PHONE : +60 - 3 - 7954 8088
FAX : +60 - 3 - 7954 7088
KOREA
MK ENTERPRISES LTD.
ROOM 604/605, ELECTRO-OFFICETEL, 16-58,
3GA, HANGANG-RO, YONGSAN-KU, SEOUL
KOREA
PHONE : +822 - 3232 - 155
FAX : +822 - 3232 - 154
CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC
cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product
and controls and chassis bottom.
Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied,
and verifi ed before it is return to the user/customer.
Ref. UL Standard No. 1492.
In case of diffi culties, do not hesitate to contact the Technical
Department at above mentioned address.
030307MIT
1. TECHNICAL SPECIFICATIONS
AUDIO SECTION
THD 10 % 6 ohms ..................................................................................................60W / Ch
THD 1 % 6 ohms ....................................................................................................50W / Ch
THD (1 kHz) at 30 W output .......................................................................... 6 ohms 0.05 %
Input Sensitivity
Linear .................................................................................................................. 200 mV
Signal to Noise Ratio
Linear (1 W) ........................................................................................................... 95 dB
FM TUNER SECTION
Frequency Range ....................................................................................... 87.5 - 108.0MHz
Usable Sensitivity ................................................................................. IHF 1.8 V / 16.4dBf
Signal to Noise Ratio ......................................................... MONO / STEREO 70dB / 70dB
Distortion ......................................................................... MONO / STEREO 0.2 % / 0.3 %
Stereo Separation .............................................................................................. 1kHz 45dB
Alternative Channel Selectivity ..................................................................... 400kHz 60dB
Image Rejection ............................................................................................... 98kHz 80dB
Tuner Output Level ...................................................................... 1kHz, 40kHz Dev 500mV
AM TUNER SECTION
Frequency Range .......................................................................................... 531 - 1602kHz
Signal to Noise Ratio .................................................................................................... 35dB
Usable Sensitivity ........................................................................................... LOOP 400 V
Distortion ...................................................................................... 400Hz, 30 % Mod 1.0 %
Selectivity ......................................................................................................... 9kHz 35dB
VIDEO SECTION
Television Format .............................................................................................. NTSC / PAL
Input Level / Impedance ............................................................................. 1Vp-p / 75 ohms
Output Level / Impedance .......................................................................... 1Vp-p / 75 ohms
Video Frequency Response 3dB ......................................................... 5Hz to 8MHz(-1dB)
GENERAL
Power Requirement [/K]............................................................................ AC 220 V 50 Hz
Power Consumption ..................................................................................................... 75 W
Maximum External Dimensions (WxHxD) .............................................. 420 x 76 x 320 mm
Weight ......................................................................................................................... 4.0 kg
[/N/S]......................................................................... AC 230 V 50 Hz
ACCESSORIES
Remote Control Unit (RC2400SR) ..................................................................................... 1
Batteries (AAA Type) .......................................................................................................... 2
FM Antenna ........................................................................................................................ 1
AM Loop Antenna............................................................................................................... 1
AC Power Cord .................................................................................................................. 1
Registration Card ............................................................................................................... 1
UserÕs Guide ....................................................................................................................... 1
The relation between the selected surround mode and the input signal
The surround mode is selected with the surround mode buttons on SR2400 or the remote control unit. However, the sound
you hear is subject to the relationship between the selected surround mode and input signal. That relationship is as follows;
SW Position Input Signal Auto Surround Decode Format Possible to select Surround Decode Fromat Direct Stereo Key
5.1ch Dolby Surr.EX Dolby Digital 5.1 Stereo
Dolby Digital 5.1 Dolby Digital 5.1 Stereo
Dolby Digital 2ch Dolby PL II Movie Dolby PL II Music Stereo
Dolby Digital 2ch Surr Dolby PL II Movie Dolby PL II Music Stereo
DTS-ES DTS5.1 Stereo
DTS 96/24 5.1ch DTS5.1 Stereo
DTS 5.1 DTS5.1 Stereo
PCM Dolby PL II Movie Dolby PL II Music Stereo
Analog Dolby PL
II
Movie Dolby PL II Music Stereo
1
2. TECHNICAL DESCRIPTION
DTS was introduced in 1994 to provide 5.1 channels of discrete
digital audio into home theater systems.
DTS brings you premium quality discrete multichannel digital sound
to both movies and music. DTS is a multi-channel sound system
designed to create full range digital sound reproduction.
The no compromise DTS digital process sets the standard of quality
for cinema sound by delivering an exact copy of the studio master
recordings to neighborhood and home theaters.
Now, every moviegoer can hear the sound exactly as the moviemaker intended.
DTS can be enjoyed in the home for either movies or music on of
DVD’s, LD’s, and CD’s.
“DTS” and “DTS Digital Surround” are registered trademarks of Digital Theater Systems, Inc.
Dolby Digital identifies the use of Dolby Digital audio coding for
such consumer formats as DVD and DTV. As with film sound, Dolby
Digital can provide up to five full-range channels for left, center, and
right screen channels, independent left and right surround channels,
and a sixth ( “.1”) channel for low-frequency effects.
Dolby Surround Pro Logic II is an improved matrix decoding technology that provides better spatiality and directionality on Dolby Surround program material; provides a convincing three-dimensional
soundfield on conventional stereo music recordings; and is ideally
suited to bring the surround experience to automotive sound. While
conventional surround programming is fully compatible with Dolby
Surround Pro Logic II decoders, soundtracks will be able to be
encoded specifically to take full advantage of Pro Logic II playback,
including separate left and right surround channels. (Such material
is also compatible with conventional Pro Logic decoders.)
Dolby Digital EX creates six full-bandwidth output channels from
5.1- channel sources. This is done using a matrix decoder that
derives three surround channels from the two in the original recording. For best results, Dolby Digital EX should be used with movies
soundtracks recorded with Dolby Digital Surround EX.
Manufactured under license from Dolby Laboratories. “Dolby”, “Pro
Logic”, and the double-D symbol are trademarks of Dolby Laboratories.
2
3. SERVICE MODE
1. Micro-Processor (IC20: MAIN PCB) version check
Operate by using [Remote controller RC2400SR]
1. Press the POWER button to turn on the unit.
2. Press the AMP button on the remote controller.
3. Press the DISPLAY button on the remote controller over 5 sec.
4. Micro-Processor version is displayed on the front FLD.
(Ex.: 03-11-05-1) then, All the FLD segments light up.
5. Turn off the power to quit Service Mode.
4. SERVICE PROCEDURE
DC Offset Alignment
Settings: Volume --- Minimum (Operate by using [Remote controller RC2400SR]
Speaker out --- No load
Power Channel
FRONT L L ch : VR 41
FRONT R R ch : VR 42
On
CENTER L ch : VR 41
SURROUND L L ch : VR 41
SURROUND R R ch : VR 42
Adjustment
Point
Measurement
Point
Speaker Output
Terminal
Alignment Terget
DC VOLTMETER
0V ± 30mV
Adjustment
Point
R ch : VR 42
L ch : VR 41
FRONT
CENTER
SURROUND
3
Personal notes:
4
5. BLOCK DIAGRAM
Repair is
PCB ASS'Y replacement
5 6
6. SCHEMATIC DIAGRAM
MAIN PCB
CONNECTOR PCB
87
DSP PCB
9 10
AUDIO PCB
AUX PCB
VIDEO PCB
SYSTEM PCB
OUTLET PCB [/N only]
1211
AMP PCB
13 14
SPEAKER TER. PCB
1615
FRONT PCB
TACT (B) PCB
TACT (A) PCB
IR PCB
17 18
H/P PCB
SMPS PCB
(Repair is PCB ASS’Y replacement)
F901 250VT5A
CN91
!
!
!
C932
152
C933
152
R901
1M1/4W
10D471K
TN91
NOTES
1. Resistor values are indicated in ohms
unless otherwise specified
( K = 1.000 M = 1.000.000 )
2. Capacitor values are indicated in
microfarades or picoparades
( :microfarades, :picoparades )
CAUTION
Safety precaution to be followed during
servicing
1) Since those parts marked with
are critical parts for safety.
use only the one described in the parts list.
2) Before returning the set to the customer
make appropriate leakage current or
resistance measurements to determine the
exposed parts are properly insulated from
the supply circuit.
!
LF91
!!
C901
474
SQ2828-40MH
ZD94
7.5V
!
ZD95
7.5V
LF92
PC92
817
C902
104
C905
400V270
C954
1KV101
!
R950
30K
2
C903
C904
101
101
C923
104
1
NT91
8D-15
!
!
!
PC91
817
R912
100K1/4W
463
5
8
!
D902
UF4007
7
U902
FSDH0165R
BD91
D5SB60
C907
1KV102
U901 KA5Q1565RF
4
FB
SS
5
C908
R904
333
510
C921
1KV102
Q908
A708
Q909
C1008
B901
1
D
ZD97
1W6V
VCC
G
2
TH91
3D-10K
ZD96
11V
R936
10
3
C940
50V22
!
ZD91
7.5V
Q901 A708
1K
R915
10K
PC93
817
C906
471
UF4004
C924
50V100
D904
R903
680
C909
222
D903
UF4004R914
C922
50V22
UF4004
R916
10
6,7
4,5
D901
R913
1/2W15
!
T1
2
1
!
T2
1
2
3
4
6
5
6
C931 222
!
D905 FCH20A15
R905
C910
1KV102
13,14
12
4.7
C911
WL
50V1000
#
R939
10K
D907
8
SB290
U908
11
11
SB290
D909
9
12
D910
UF4004
11
D911
UF4004
10
9
D912
1N4148
D913
1N5819
7
10V470
8
C927
#
R940
120KF
R941
680KF
C917
35V1000
35V1000
C925
16V330
R918
JUMP0
ZD92
1W8.2V
C926
50V47
R9221KR923
C912
WL
50V1000
C919
PC92/A
U907
431
M901
0.01
100
Q906
C1008
C952
104
U905
7812
D915
1N4003
D916
1N4003
U906
L903 3.3UH
L902 3.3UH
1.54KF
50V1
C928
U909
3
2
7912
R919
22K
#
R925
#
R924
1.2KF
Q902
C1008
R9061KR907
3.3K
PC91/A
817
U903
431
KA358
4
8
D906
SB240
10
C915
35V1000
11
Q903
A708
C929
10V470
R937
10K
R926
5.1K
C913
C918
50V100
C920
50V100
R920
10K
R921
10K
ZD93
3.9V R927
L901 2.2UH
R908
35KF
50V1
R910
3.3KF
R938
10K
Q905
C1008
7805
D914
1N4003
R929
2.3K
5.6K
C930
50V1
#
#
U904
R933
4.7K
R932
2K
R930
R928
10K
2K
R942
10K
C914
WL
50V680
D908
1N4148
Q904
C1008
C950
50V22
0.5A
C916
50V100
R945
5.1K
R944
5.1K
R947,948,949
2W1Kx3
C955
104
PC93/A
817
R931
1K
R943
1K
GND
1
2
3
4
5
1
2
3
4
5
6
7
1
2
3
4
5
6
7
8
IN1
IN2
IN3
IN4
IN5
CN92
CN93
CN94
+28
+28
GND
GND
GND
+28
GND
+5.5
GND
GND
-12.5
+12.5
PRT
-2.0
+2.0
-30
STB
CTL
GND
PDN
2019
7. PARTS LOCATION
FRONT A
FRONT B
IC81
IC82
Q802 - Q805 Q806
Q801
CONNECTOR A
Q137
Q135
Q101
Q114
CONNECTOR B
IC23 IC24 IC21 IC22
21 22
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