Marantz-MM7025-pwr-sm 电路图 维修手册.pdf

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1、Service Manual Some illustrations using in this service manual are slightly different from the actual set. Please use this service manual with referring to the operating instructions without fail. For purposes of improvement, specifi cations and design are subject to change without notice. 2 Channel

2、 Power Amplifi er MM7025 /N1B/U1B MM7025 MM7025 S0169-1V01DM/DG1010Copyright 2010 D 1. KOA Corporation Part No. (MJI) Type No. (KOA) Description 00MNH05 140 RF25S J (5% 1/4W) 00MNH05 120 RF50S J (5% 1/2W) 00MNH85 110 RF73B2A J (5% 1/10W) 00MNH95 140 RF73B2E J (5% 1/4W) 2. Matsushita Electronic Compo

3、nents Co., Ltd Part No. (MJI) Type No. (MEC) Description 00MNF05 140 ERD-2FCJ (5% 1/4W) 00MRF05 140 00MNF02 140 ERD-2FCG (2% 1/4W) 00MRF02 140 Examples ; * Resistance value 0.1 .001 10 .100 1k .102 100k . 104 0.5 .005 18 .180 2.7k .272 680k . 684 1 .010 100 .101 10k .103 1M . 105 6.8 .068 390 .391 2

4、2k .223 4.7M . 475 NOTE ON FUSE : Regarding to all parts of parts code 00MFS20 xxx2xx, replace only with Wickmann-Werke GmbH, Type 372 non glass type fuse. NOTE ON SAFETY FOR FUSIBLE RESISTOR : Resistance value Resistance value (0.1 10k) Resistance value Resistance value ANT. : ANTENNA BATT. : BATTE

5、RY CAP. : CAPACITOR CER. : CERAMIC CONN. : CONNECTING DIG. : DIGITAL HP : HEADPHONE MIC. : MICROPHONE -PRO : MICROPROCESSOR REC. : RECORDING RES. : RESISTOR SPK : SPEAKER SW : SWITCH TRANSF. : TRANSFORMER TRIM. : TRIMMING TRS. : TRAMSISTOR VAR. : VARIABLE XTAL : CRYSTAL NOTE ON SAFETY : Symbol z Fir

6、e or electrical shock hazard. Only original parts should be used to replaced any part marked with symbol z. Any other component substitution (other than original type), may increase risk of fi re or electrical shock hazard. 安全上注意 : z 部品、安全上重要部品。必指定 部品番号部品使用下。 ABBREVIATION AND MARKS PARTS INFORMATION

7、 RESISTORS 1) 00MGD05 140, Carbon fi lm fi xed resistor, 5% 1/4W 2) 00MGD05 160, Carbon fi lm fi xed resistor, 5% 1/6W Examples ; ? Resistance value 0.1 .001 10 .100 1k .102 100k .104 0.5 .005 18 .180 2.7k .272 680k .684 1 .010 100 .101 10k .103 1M .105 6.8 .068 390 .391 22k .223 4.7M .475 Note : Pl

8、ease distinguish 1/4W from 1/6W by the shape of parts used actually. CAPACITORS CERAMIC CAP. 3) 00MDD1 370, Ceramic capacitor Disc type Temp.coeff.P350 N1000, 50V Examples ; ? Tolerance (Capacity deviation) 0.25pF. 0 0.5pF. 1 5%. 5 Tolerance of COMMON PARTS handled here are as follows : 0.5pF 5pF .0

9、.25pF 6pF 10pF .0.5pF 12pF 560pF .5% ? Capacity value 0.5pF .005 3pF .030 100pF .101 1pF .010 10pF .100 220pF .221 1.5pF .015 47pF .470 560pF .561 CERAMIC CAP. 4) 00MDK16 300, High dielectric constant ceramic capacitor Disc type Temp.chara. 2B4, 50V Examples ; ? Capacity value 100pF .101 1000pF . 10

10、2 10000pF .103 470pF .471 2200pF . 222 ELECTROLY CAP. ( ) 5) 00MEA 10, Electrolytic capacitor One-way lead type, Tolerance 20% Examples ; ? Capacity value 0.1F .104 4.7F .475 100F . 107 0.33F .334 10F .106 330F . 337 1F .105 22F .226 1100F . 118 2200F . 228 ? Working voltage 6.3V .006 25V .025 10V .

11、010 35V .035 16V .016 50V .050 FILM CAP. ( ) 6) 00MDF15 350 Plastic fi lm capacitor 00MDF15 310 One-way type, Mylar 5% 50V 00MDF16 310 Plastic fi lm capacitor One-way type, Mylar 10% 50V Examples ; ? Capacity value 0.001F (1000pF) .102 0.1F .104 0.0018F .182 0.56F .564 0.01F .103 1F .105 0.015F .153

12、 ? ? ? Capacity value Tolerance ? Capacity value Resistance value ? ? Working voltage Capacity value ? Capacity value 060522 MZ 5 TECHNICAL SPECIFICATIONS DIMENSION 352 21.5330.5 440 126 11016 Rated power output (from 20 Hz to 20 kHz, two channels driven): 140 W/ch, 8 170 W/ch, 6 Maximum effective o

13、utput power (from 1 kHz, two channels driven): 210 W/ch, 6 Output bandwidth (8 load, 0.09 %):5 Hz 40 kHz Frequency response (1 W, 8 ):8 Hz 100 kHz (3 dB) Damping factor:100 Input sensitivity/impedance:1.2 V / 22 k (UNBALANCED) 2.4 V / 30 k (BALANCED) Signal-to-noise ratio (IHF-A):105 dB Voltage ampl

14、ifi cation level:29 dB Supply voltage (for U1B):AC 120 V, 60 Hz Supply voltage (for N1B):AC 230 V, 50 Hz Power consumption:330 W Standby power:0.2 W Maximum external dimensions:440 (W) x 126 (H) x 352 (D) mm Weight:10.8 kg 6 DISASSEMBLY Disassemble in order of the arrow of the fi gure of following f

15、l ow. In the case of the re-assembling, assemble it in order of the reverse of the following fl ow. In the case of the re-assembling, observe attention of assembling it. Wire Arrangemont s If wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them

16、neatly as they were originally bundled or placed afterward. Otherwise, incorrect arrangement can be a cause of noise generation. View from above Front side FRONT PANEL ASSY Refer to EXPLODED VIEW FRONT PCB ASSY(1) (Ref. No. of EXPLODED VIEW : C2) FRONT PCB ASSY(2) (Ref. No. of EXPLODED VIEW : C3) FR

17、ONT PCB ASSY(2) (Ref. No. of EXPLODED VIEW : C1) CPU PCB ASSY(1) Refer to EXPLODED VIEW CPU PCB ASSY(1) (Ref. No. of EXPLODED VIEW : C7) STANDBY PCB ASSY Refer to EXPLODED VIEW STANDBY PCB ASSY (Ref. No. of EXPLODED VIEW : C5) MAIN PCB ASSY(3) Refer to EXPLODED VIEW MAIN PCB ASSY(3) (Ref. No. of EXP

18、LODED VIEW : C11) MAIN PCB ASSY(4) Refer to EXPLODED VIEW MAIN PCB ASSY(4) (Ref. No. of EXPLODED VIEW : C8) TOP COVER MAIN PCB ASSY(2) Refer to EXPLODED VIEW MAIN PCB ASSY(2) (Ref. No. of EXPLODED VIEW : C12) 7 SPECIAL MODE Special mode setting button s b Enters the special mode when A button is pre

19、ssed in normal power state. No.ModeButton AContents 1Service modeService CPU version displayed. and Furthermore,this unit in a condition of the following by pushing the Button A. 1-1 Protection Log displayServiceDisplayed protection history. 1-2 Exit from protection state Service (Hold button more t

20、han 5 seconds.) Displayed protection history and move to normal mode. 2Factory modeFactory Cooling FAN actived . and Furthermore,this unit in a condition of the following by pushing the Button A. 2-1AVSS output checking modeFactoryAVSS, H/L check mode 2-2 Destination Switching checking mode DisplayD

21、isplay and changing destination. 2-3 Auto standby confi rm mode. Display + ON/STANDBY Go to standby mode condition with after 15 seconds. no signal no operation no command (RC) 2-4 Initialize mode ON/STANDBYInitialize V3 (D405) V2 (D406) V1 (D407) FACTORY botton (SW401) SERVICE botton (SW402) CPU Ve

22、rsion / Protection Log Indication LED 8 1. CPU Version check The fi rmware version is displayed on LEDs as follows. V1(D407)V2(D406)V3(D405)Version ONOFFOFFVer1 OFFONOFFVer2 ONONOFFVer3 OFFOFFONVer4 ONOFFONVer5 OFFONONVer6 ONONONVer7 1.1. Protection Log display The last time protection log is displa

23、yed on LEDs as follows if the Service button is pushed(5sec) in the Service mode. For detail and coping process, please refer to “SYSTEM ERROR”. V1(D407)V2(D406)V3(D405)Cause of protect OFFOFFOFFNo protection log OFFOFFONDetection of over current over 200msec on Power AMP OFFONOFFDetection of DC on

24、Power Amp output OFFONON- ONOFFOFF Detection of over current below 200msec on Power Amp ONOFFON Detection of abnormality on +/-38V, +/-15V supply or power amp supply ONONOFFDetection of abnormal heat of Power Amp ONONON- 9 2. Cooling FAN active The fan rotates according to the condition of the tempe

25、rature sensor(IC409) as follows. T :IC409 temperatureFan rotate T 0CSTOP 0C T 10CRotate Low speed 10C TRotate High speed 2.1. AVSS H/L Switching The AVSS relay High/Low switching cyclic if the Factory button is pushed in the factory mode. If not changing, there is an error in the AVSS relay circuit

26、(RY14 on Main pcb). This is effective only in factory mode. 2.2. Destination Switching The destination changes cyclic if the DISPLAY button is pushed for fi ve seconds in the factory mode. For confi rmation, The Auto Standby LED lights as follows. The difference by destination is only a Auto Standby

27、 function. DestinationAuto standby function Auto standby LED (factory mode only) N (Europe)EnableLights Others (NA/Japan)DisableBlinking 500msec interval 2.3. Auto Standby Function confi rm mode When press DISPLAY button(fi rst) + ON/STANDBY button(second) together, enters Auto Standby Function conf

28、i rm mode. From this state, if there is no audio input/operation/command for 15 seconds, changes in the state of the standby. If not changing, there is an error in the auto standby detect circuit (IC15, 16 on Main pcb). 2.4. Initialize Initializes following setting if the ON/STANDBY button is pushed

29、 in the factory mode. ContentsAfter initialized Auto Standby ModeNot change Illumination LED On/OffOn Protection logNo protection log 10 3. SYSTEM ERROR The reason for the error can be presumed from Standby LED display when the error occurs and protection log display. Refer to 1-1. for the method of

30、 confi rming protection log. If the AC power supply is turned off, the state of all protection can be released. Error Detection Protection log display ReasonCheck Point V1 D407 V2 D406 V3 D405 Standby LED Blinking 125msec interval (Fast Blinking) ONOFFON Detection of abnormality on +/-38V, +/- 15V s

31、upply or power amp supply (_P LINE FAIL) Connection MAIN PWB : BN12- 4pin CPU PWB : CN41 - 4pin CPU (IC402) 45pin _P LINE FAIL : 0V : Fail 5V : Normality There is a possibility that 38 V supply or P-AMP power supply is broken. Power Amp Supply Power MAIN PWB : IC19,IC20,D133-136,RY14, F102,103,F104,

32、F105,D132, D137-140 OFFOFFON Detection of over current over 200msec on Power AMP (_P CUR FAIL) Connection MAIN PWB : BN12 - 4pin, CN12-8pin CPU PWB :BN41 - 8pin. CPU (IC402) 38pin _P CUR FAIL : 0V : Fail 5V : Normality There is a possibility that Power AMP is broken. Power Amp Check Power AMP circui

33、t (MAIN PWB) Standby LED Blinking 500msec interval (Slow Blinking) ONOFFOFF Detection of over current below 200msec on Power Amp (_P CUR FAIL) Connection MAIN PWB : BN12 - 4pin, CN12-8pin CPU PWB :BN41 - 8pin. CPU (IC402) 38pin _P CUR FAIL : 0V : Fail 5V : Normality Power Amp Check Power AMP circuit

34、 (MAIN PWB) OFFONOFF Detection of DC on Power Amp output (_P AMP FAIL)Connection MAIN PWB :CN12-9pin CPU PWB : BN41 - 9pin Main-CPU (IC402) 41pin _P AMP FAIL : 0V : Fail 5V : Normality Power Amp Check Power AMP circuit (MAIN PWB) ONONOFF Detection of abnormal heat of Power Amp (_HEAT DET P)Connectio

35、n MAIN PWB : CN12-10pin CPU PWB : BN41 - 10pin Main-CPU (IC402) 24pin 0V : Fail 5V : Normality PosistorTH11 OFFOFFOFFNo protection log VERSION UPGRADE PROCEDURE OF FIRMWARE ABOUT REPLACE THE MICROPROCESSOR WITH A NEW ONE When replaced of the U-PRO (Microprocessor), confi rm contents of the following

36、. PWB NameRef. No.Description After replaced Remark 12336Z-AIC402R5F21246SNFPC After replaced A : Mask ROM (With software). No need write-in of software to the microprocessor. B : Flash ROM (With software). Usually, no need write-in of software. But, when the software was updated, you should be writ

37、e-in of the new software to the microprocessor or fl ash ROM. Please check the software version. C : Empty Flash ROM (Without software). You should be write-in of the software to the microprocessor. Refer to “Update procedure” or “writing procedure”, when you should be write-in the software. A Updat

38、e CPUs software to internal Flash-ROM. This mode is to update the software for microprocessor. The target devise is internal fl ash ROM of microprocessor (IC402) on CPU PWB (12336Z-A). The updating of software takes about 20 seconds. The software is common by MM7055 and MM7025. Necessary Equipment T

39、he following items are required for updating. Windows PC (OS: Windows2000 or WindowsXP) with Serial port. RS-232C Dsub-9 pin cable (female to female/straight type) Update software to CPU. (FlashSta.exe, MM7055_7025_yymmddvv.mot and MM7055_7025_yymmddvv.id in CPU (MM7055_7025) folder) DATA UPDATE KIT

40、 (part no. 90M-SR4500JIG) Use DATA UPDATE KIT to connect PC and CN44 (FFC connector) in rear panel of the unit, when updating CPU Update CPUs software to internal Flash-ROM (1) Disconnect the mains cord from the unit (2) Connect PC and the DATA UPDATE KIT with the RS-232C cable. And connect FFC (ups

41、ide contact) to the connector (CN44) into the rear panel of the unit from the DATA UPDATE KIT. (3) Connect the mains cord into the unit. (4) Press the POWER ON/OFF button for turn on the unit. Then the STANDBY LED do not turn on a light. (5) Put the CPU (MM7055_7025) folder into anywhere on your PCs

42、 hard disc. 11 (6) Double click the CPU (MM7055_7025) folder. (7) Double click the FlashSta.exe. And launch the M16C Flash Start. (8) Check the internal fl ash memory in the Select Program. Choose the COM Port number. And the click OK. 12 (9) Click the Refer. (10) Choose the MM7055_7025_yymmddvv.mot

43、. And click Open. NOTE : The yy is two digit of year. The mm is month. The dd is date. The vv is version. (11) The FilePath and ID are inputted automatically, and the MCU Type is selected to R8C automatically. Click the OK. 13 (12) Click the Setting. (13) Choose the 57600 in the Baud rate. (DO NOT c

44、hoose the other one.) Choose the 40 in Program_intervals(ms). Click the OK. 14 (14) Click the E.P.R. (15) Click the OK. (16) Software is written into the internal Flash-ROM of CPU. The updating of software takes about 20 seconds. 15 (17) Click the OK. (18) Click the Exit. (19) Disconnect the mains c

45、ord from the unit. (20) Disconnect the RS-232C cable from the unit. 16 17 ADJUSTMENT Idling Current Alignment (1) Each of the measurement points are provided with the two test points. Set a digital Voltage meter to DC voltage input, connect the meter to the test points at both contact points. (2) Af

46、ter the setup above, turn on the main switch. (3) Adjust variable resistors (VR11,VR12) according to the digital voltmeter readings. The target setting value is the following table for each channel. Settings : No-signal of input Speaker out No Load Top lid OPEN Measurement Point ChannelAdjustment VR

47、Measurement Point MAIN PWB LVR11CN21 RVR12CN22 Time Table of Idling Current Rise After Turning ON Ambient temperature 20 to 30 degrees centigrade Measurement Voltage 10 min.1.5 mV 0.2 mV 20 min.1.5 mV 0.2 mV 30 min.1.5 mV 0.2 mV LEFT SIDE L VR11 CN21 R VR12 CN22 POWER AMP MODULE MAIN HEAT SINK FAN RIGHT SIDE 18 YES YES YES YES YES YES When the AC line turned on, does the ON/STANDBY indicator on the front panel light? Is the PROTECT LED blinked from power on 7seconds after? Refer to SPECIAL MODE -3.SYSTEM ERROR Power not turn on. Is a DC 5V voltage supplied from the STANDBY PCB to the -