Marantz MA-9S2 Service Manual
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Marantz MA-9S2 Service Manual

Monaural power amplifier
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Service
Manual
SECTION
1. TECHNICAL SPECIFICATIONS ........................................................................................... 1
2. CAUTION .............................................................................................................................. 1
3. ALIGNMENTS ....................................................................................................................... 2
4. BLOCK DIAGRAM ................................................................................................................ 4
5. WIRING DIAGRAM ............................................................................................................... 5
6. SCHEMATIC DIAGRAM ...................................................................................................... 7
7. PARTS LOCATION ..............................................................................................................11
8. EXPLODED VIEW AND PARTS LIST ................................................................................ 23
9. ELECTRICAL PARTS LIST ................................................................................................. 27
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
Monaural Power Amplifi er
mo n a u ra l p o w e r a mp l if ie r ma - 9 s2
p o w e r o n / o f f
INPUT SELECTOR
1
UNBALANCED-2
BALANCED

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MA-9S2
MA-9S2 /
F N/K1G/N1G/U1G
METER OFF
ON
OFF
Part no. 90M339J855010
PAGE
First Issue 2006.09
MZ

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Summary of Contents for Marantz MA-9S2

  • Page 1 Service MA-9S2 / F N/K1G/N1G/U1G Manual Monaural Power Amplifi er mo n a u ra l p o w e r a mp l if ie r ma - 9 s2 p o w e r o n / o f f...
  • Page 2 MARANTZ Parts for your equipment are generally available to our National Marantz Subsidiary or Agent. ORDERING PARTS : Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specifi ed.

  • Page 3: Technical Specifications

    1. TECHNICAL SPECIFICATIONS DIMENSIONS Rated power output (20 Hz to 20 kHz) ..............300 W (8 Ω load) ..............600 W (4 Ω load) Total harmonic distortion (20 Hz to 20 kHz, 8 Ω load) .................. 0.01 % Output bandwidth (8 Ω load, 0.05 %) [F] ..............5 Hz to 55 kHz Frequency response (1W, 8 Ω...

  • Page 4: Alignments

    3. ALIGNMENTS 3. ALIGNMENTS Adjustment Procedure Set the power voltage to rated voltage for this adjustment. DC Offset Voltage Adjustment 1. Before turning on power, set the attenuator switch (S201) ATTENUATOR at –∞, and turn the variable resisters R691 and R692 on S201 P691 the PWB (P691) counterclockwise to the end.
  • Page 5 4. The voltage of the idling current will be 10mV(50mA) for 10mV 50mA each. The current value is stabilized by about 10mV (50mA) in 10mV 50mA about 30 minutes after turn on power. Refer to the following graph for the idling current and time 8mV 40mA after turn on power.

  • Page 6: Block Diagram

    4. BLOCK DIAGRAM...

  • Page 7: Wiring Diagram

    6. WIRING DIAGRAM J007 W013 J2081P) BALANCED P201 INPUT ATT SW J006 W012 UN BAL 1 INPUT W010 J005 W011 UN BAL 2 W003 J204(5P) AC IN C001 W014 C002 J851(3P) J501(5P) L001 POWER L004 P851 TRANS AC INPUT P501 (SOFT START) INPUT AMP W015...

  • Page 8: Schematic Diagram

    7. SCHEMATIC DIAGRAM P671 (AMA) WG339J603- Q673 Q675 Q677 Q678 Q676 Q674 2SC2922 2SC2922 2SC2922 2SA1216 2SA1216 2SA1216 P691 WG339J605- (AMA) R679 Q679 220 1/4W -0.6 2SD1508 Q671 C671 BIAS ADJ BIAS ADJ Q672 2SC4883 2SA1859 0.01 R692 R691 2.2k 2.2k -48.5 -1.7...
  • Page 9 P871 C871 0.01 (APS) TO J623/J624 W028/W029 W032 S871 C001 C002 WG399J505- TO J625/626 33000 33000 W030/W031 J871 P951 WG339J507- (APM) W033 22.3 SELU1E50CM-S TO GND D951 C001/C002 J808 G801 J804 6.8 0.47 19.4 W002 R804 48.5 C957 C956 Q953 J801 21.6 L001...

  • Page 10: Parts Location

    8. PARTS LOCATION P601 PWB A C301 C612 D614 J621 Q604 Q629 R322 R347 R610 R635 R660 C302 C613 D615 J622 Q605 Q630 R323 R348 R611 R636 R661 C303 C614 D616 J627 Q606 Q631 R324 R349 R612 R637 R662 C304 C615 D617 J628...
  • Page 11 P671 PWB B C671 Q671 R672 U671 J671 Q672 R673 U672 J672 Q673 R674 U673 J673 Q674 R675 U674 J674 Q675 R676 U675 J675 Q676 R677 U676 J676 Q677 R678 U677 J677 Q678 R679 U678 J678 Q679 U669 U679 J679 R671 U670 U680...
  • Page 12 P201 PWB B P501 PWB B C201 J203 R204 R214 C202 J204 R205 R215 C203 J205 R206 R216 C204 J208 R207 R217 C205 L201 R208 R218 D201 L202 R209 R219 D202 L203 R210 R220 D203 R201 R211 S201 J201 R202 R212 J202 R203...
  • Page 13 PH01 PWB B (HDAM-SA) P801 PWB B DH01 DH02 DH03 DH04 JH01 JH02 QH01 QH02 QH03 QH04 QH05 QH06 RH01 RH02 RH03 RH04 RH05 RH06 RH07 UH02 001K C910 D816 D905 J822 R803 R824 R917 U806 C801 C911 D817 D906 J901 R804 R901...
  • Page 14 P851 PWB A P871 PWB B C871 J871 S871 C851 D860 R853 U861 C852 D861 R854 U862 C853 G851 R855 U863 C854 J851 R856 U864 C855 J852 R857 U865 C856 J854 U851 U866 D851 J857 U852 D852 J858 U853 D853 J859 U854 D854...
  • Page 15 P941 PWB B P951 PWB B P971 PWB B C971 J941 D971 J942 J971 J943 R971 R941 S941 C951 J981 R955 C952 M951 R956 C953 Q951 R957 C954 Q952 R958 C955 Q953 R959 C956 Q954 R960 C957 R951 R961 D951 R952 J951 R953...

  • Page 16: Exploded View And Parts List

    9. EXPLODED VIEW AND PARTS LIST...
  • Page 17 00M339J851350 USER GUIDE USER GUIDE MA-9S2 (K) 001T /N1G 00M339J851320 00M339J851320 USER GUIDE USER GUIDE MA-9S2 (N) 001T /U1G 00M339J851320 USER GUIDE USER GUIDE MA-9S2 (N) NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 18 NOT STANDARD SPARE PART 001S 00M339J801020 PACKING CASE PACKING CASE MA-9S2 002S 00M339J805020 MASS CARTON PACKING CASE (W) 003S 00M339J809070 CUSHION CUSHION FRONT 004S 00M339J809080 CUSHION CUSHION REAR NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.

  • Page 19: Electrical Parts List

    9. ELECTRICAL PARTS LIST NOTE ON SAFETY FOR FUSIBLE RESISTOR : PARTS INFORMATION The suppliers and their type numbers of fusible resistors RESISTORS 1) 00MGD05 × × × 140, Carbon fi lm fi xed resistor, ±5% 1/4W are as follows; 2) 00MGD05 ×...
  • Page 20 00MHT109702A0 00MHT109702A0 TRS. 2SA970 (GR) OR (BL) P501 Q521 00MHT322402A0 00MHT322402A0 TRS. 2SC2240 GR OR BL P501 Q522 00MHT322402A0 00MHT322402A0 TRS. 2SC2240 GR OR BL NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 21 00MHD20027010 DIODE HSS81TD-E 150V 150MA P601 D606 00MHD20027010 DIODE HSS81TD-E 150V 150MA P601 D607 00MHD20027010 DIODE HSS81TD-E 150V 150MA P601 D608 00MHD20027010 DIODE HSS81TD-E 150V 150MA NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 22 ! 0.1 OHM J 5W BWR5 P601 R311 00MGW05001050 00MGW05001050 RES. ! 0.1 OHM J 5W BWR5 P601 R312 00MGW05001050 00MGW05001050 RES. ! 0.1 OHM J 5W BWR5 NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 23 2SC2922 Y,P PAIR WITH Q688 OF K606 P681 Q688 TRS. 2SA1216 Y,P PAIR WITH Q687 OF K606 P681 Q689 00MHT415080A0 00MHT415080A0 TRS. 2SD1508 DARLINGTON TR.HFE>4000 IDLING ADJ PWB P691 (00MWG339J605-) NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 24 00MBF47400020 CAP.COMP. 0.47UF+6.8OHM RFD2B474K P801 G803 00MBF47400020 00MBF47400020 CAP.COMP. 0.47UF+6.8OHM RFD2B474K P801 G804 00MBF47400020 00MBF47400020 CAP.COMP. 0.47UF+6.8OHM RFD2B474K P801 G805 00MBF47400020 00MBF47400020 CAP.COMP. 0.47UF+6.8OHM RFD2B474K NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 25 0520100180090 0520100180090 FUSE # 021806.3MXP (FUSE 6.3A 250V) P851 F851 /U1G 0520100210050 FUSE # 0218015MXP T15A L 250V P851 G851 00MBF47400020 00MBF47400020 CAP.COMP. 0.47UF+6.8OHM RFD2B474K NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 26 470 OHM +-5% 1/6W PH01 RH03 00MGD05220160 RES. 22 OHM +-5% 1/6W PH01 RH04 00MGD05220160 RES. 22 OHM +-5% 1/6W PH01 RH05 00MGD05220160 RES. 22 OHM +-5% 1/6W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.
  • Page 27 POS. NO. PART NAME DESCRIPTION NAME COLOR (FOR EUR) (MZ) PH01 RH06 00MGD05220160 RES. 22 OHM +-5% 1/6W PH01 RH07 00MGD05683160 RES. 68K OHM +-5% 1/6W NOTE : "nsp" PART IS LISTED FOR REFERENCE ONLY, MARANTZ WILL NOT SUPPLY THESE PARTS.

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