Pioneer-SXSW404-amr-sm电路图 维修手册.pdf

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1、 ORDER NO. PIONEER CORPORATION 4-1, Meguro 1-chome, Meguro-ku, Tokyo 153-8654, Japan PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A. PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01

2、, Singapore 159936 PIONEER CORPORATION 2006 STANDBY/ON - VOLUME + AUDIO INPUTSURROUND SX-SW404 RRV3336 AUDIO MULTI-CHANNEL RECEIVER SUBWOOFER SX-SW404 SX-SW606 SX-X360 THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). Ask users to bring both subwoofer and the display unit together whe

3、n servicing. ModelTypePower RequirementRemarks SX-SW404WYXCN5AC220-240V SX-SW606WYXCN5AC220-240V SX-X360WYXCN5AC220-240V SX-X360WVXCN5AC220-240V SX-X360KUCXCNAC120V For details, refer to Important Check Points for Good Servicing. T-ZZK MAR. 2006 printed in Japan RadioFans.CN 收音机爱 好者资料库 SX-SW404 2 12

4、34 1234 C D F A B E SAFETY INFORMATION This service manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as t

5、hose covered by this manual. Improperly performed repairs can adversely affect the safety and reliability of the product and may void the warranty. If you are not qualified to perform the repair of this product properly and safely, you should not risk trying to do so and refer the repair to a qualif

6、ied service technician. WARNING This product contains lead in solder and certain electrical parts contain chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. Health then the following indication appears. 3. Press the key corresponding to th

7、e speaker to be used to determine the setting. The power will automatically be turned off. 3. How to confirm the speaker setting 1. While holding the AUDIO INPUT and STANDBY/ON keys on the Display unit pressed, connect the power cord to the wall outlet. Note: If the power cord was disconnected immed

8、iately before, be sure to wait at least one minute before turning on the power in this way. Otherwise, the unit may not operate properly. Or, in the standby mode, simultaneously hold the VOL+ and STANDBY/ON keys on the Display unit pressed for more than 3 seconds. 2. Enter Test mode. 3. Hold the AUD

9、IO INPUT key pressed for more than 8 seconds. 4. The setting is displayed. If no setting has been written in the EEPROM, UNKNOWN is displayed. 4. Error indication When the unit is turned on without any speaker setting, a warning NO SPTYP will be displayed. Even with this warning displayed, all key o

10、peration is possible. After a key operation, the display will return to this warning indication. SX-X360 (XBOX model) only No setting is required. After the power cord is plugged in, XBOX is automatically set. R E G U L A R T A L L - 1 T A L L - 2 A VR A C K N OS P T Y P S P T Y P E T A L L - 1 U N

11、K N O W N : Flashing For Japan model Note: Be sure to select the setting corresponding to the model number of the speaker. (See the table below.) VOL- key VOL+ key AUDIO INPUT key SURROUND key STANDBY/ON keyNot used DestinationModel NumberSpeaker setting Europe (Continent) SX-SW404/WYXCN5 SX-SW606/W

12、YXCN5 REGULAR TALL-1 Europe (UK)SX-SW505HX/WVXCN5REGULAR North America SX-SW260/KUCXCN SX-SW560/KUCXCN REGULAR TALL-1 GeneralSX-SW303/WLPWXCN SX-SW505/WLPWXCN REGULAR TALL-1 DestinationModel NumberSpeaker setting North America SX-X360/KUCXCNXBOX EuropeSX-X360/WYXCN5, WVXCN5XBOX For reference SX-SW40

13、4 58 1234 1234 C D F A B E 7.1.3 PROPOSAL OF DSP ERROR DISPLAY O O O O - U M 9FL display DIR ERR DSP ERR HREQ ERR DSP NG DMUTE ON NO ERR (The source is 88.2/96kHz.) NO ERR (The source is not 88.2/96kHz.) Example) Specification of DSP error display DSP error message mode Press the SOUND key in test m

14、ode, to select the mode that DSP error messages are displayed. Press the SOUND key again to return to the normal test mode display. For this reason, the usual function of SOUND does not work in the test mode. 96k (This character is displayed while the source is 88.2 or 96kHz PCM.) DSP MUTE (This cha

15、racter is displayed while DSPMUTE is active.) DIR UNLOCK (This character is displayed while DIR is UNLOCK.) The name of an error is displayed by four characters. D I E R - U M D S E R - U M H R E Q - U M D S N G - U M D M U T -M D S O K -9 D S O K - Data cannot be received from DIR. DIR is assumed t

16、o be in failure. Data cannot be received from DSP. Communication between DIR and DSP is in failure. DSP is assumed to be in failure. No value is returned from HREQ. DSP is assumed to be in failure. There are DSP error data. Communication between DIR and DSP is in failure. DSP is assumed to be in fai

17、lure. DECMUTE is always activated. Communication between DIR and DSP is in failure. DSP is assumed to be in failure. 96-kHz source data are being played back. (No abnormality) No abnormality SX-SW404 59 5678 56 7 8 C D F A B E 7.1.4 CIRCUIT DESCRIPTION OF DIGITAL AMP. SECTION SYSTEM CONNECTOR SPEAKE

18、RS DVD/DVR 2 (OPTICAL) CENTER SURROUND DVD/DVR 1 (COAXIAL) DIGITAL AUDIO INPUT FM UNBAL75 AM LOOP ANTENNA ANALOGDIGITAL (OPTICAL) RL R L FRONT RL CONTROL OUTSUB WOOFER USE ONLY WITH DISPLAY UNIT Filter and Volume Timing Control Gate Drive XSD To UCOM PCM Signal From DSP 3.3V 0V TAS5508BPAG PWM Proce

19、ssor section PWM Processor section Power Stage section Power Stage section Output LPF section Output LPF section TAS5142DDV XOTW Protection PCM PWM Gate Drive 30.5V 0V0V 0V The PCM signals output from the DSP are input to this section, and their volume and sound quality are digitally adjusted. At th

20、e output stage, after conversion from PCM to PWM, the signals are output to the Power stage. In this section, timing is controlled so that the MOSFETs on the high and low sides will not be turned on simultaneously. The voltage of the PWM signals are raised to drive the gates of the MOSFET, and the P

21、WM signals to drive the speakers are output from the MOSFET at the output stage. Detection and protection functions against short-circuiting of the output signals and temperature exceeding the standard value are also provided. The carrier elements, high-frequency signals that are unnecessary for the

22、se speakers, are eliminated. The signals passed through the LPF will become sine-wave signals, as shown in the figure above. Attention : As a signal to drive the BTL is output from the negative speaker terminal, DO NOT short-circuit between the negative speaker terminal and ground, such as the chass

23、is. Do not short-circuit between the plus speaker terminal and ground, such as the chassis, too. Power Stage ICs No.Protection Enable State IC3201/SD (5pin) L IC3301 IC3401/OTW (2pin) L IC3101IC3201, IC3301, IC3401 If the detection and protection work, the ports of the power stage ICs become the fol

24、lowing state. *1 *2 Negative Speaker Terminal Ground (Chassis) Do not short-circuit *1 XSD: /SD (5pin) *2 XOTW : /OTW (2pin) SX-SW404 60 1234 1234 C D F A B E 7.1.5 SPECIFICATIONS FOR THE PROTECTION CIRCUITS FOR THE DIGITAL AMPLIFIER The protection circuits for the Digital Amplifier are activated, f

25、ollowing the specifications shown below. The error indication on the FL display shows the reason a protection circuit was activated. Upon diagnosis of the Digital Amplifier, refer to the specifications for the protection circuits here and the overview of the Digital Amplifier circuitry. 1. Overview

26、The system microcomputer monitors the ports for shutdown requests (Pin 5 : /SD) and the ports for abnormal-temperature detection (Pin 2 : /OTW) of the Power Stage ICs (IC3201, IC3301, and IC3401). As soon as any abnormality is detected, it shuts the unit down. To notify the user of the possibility o

27、f a too high a volume, when the unit is turned on the next time, the volume level will be set to 0, and an error message will be displayed on the FL display. 2. Ports on the system microcomputer to be used for detection Pin 77: SHUTDOWN Low voltage at this pin means overcurrent at the Power Stage IC

28、s or that the power supply voltage for the gate drive for the Power Stage ICs (= GVDD, Pins 1, 22, 23, and 24), i.e., VS+12 is less than 10 V. Pin 79: XOTW Low voltage at this pin means the temperature at the Power Stage ICs exceeded 125C. Note:As one Power Stage IC is provided with two channels, th

29、ree Power Stage ICs (in total 6 channels) are mounted in this unit. For abnormality detection, the unit implements a logical OR operation regarding these three ICs. Therefore, which IC is abnormal cannot be known directly. To find which IC is abnormal, it is required to check whether abnormality det

30、ection is activated or not with the abnormality detection port of each IC open (by temporarily removing a series resistor (IC3201:R3201, R3202, IC3301:R3301, R3302, IC3401:R3401, R3402) ). 3. Detection timing Start: Detection starts 500 ms after the PWRCONT port (Pin 84) of the system microcomputer

31、becomes active by your pressing the STANDBY/ON key. Finish : When the STANDBY/ON key is pressed again (when the power-off process starts). 4. Operation of the protection circuits The following three protection circuits are activated when the conditions shown below are met: Overcurrent detection: Ind

32、ication on the FL display: OC ERROR Conditions: If the SHUTDOWN ports, which are monitored every 10 ms, become low 7 times in succession. Abnormal temperature detection 1: Indication on the FL display: OVERTEMP Conditions: If the XOTW ports, which are monitored every 10 ms, become low in succession

33、for one minute. Abnormal temperature detection 2: Indication on the FL display: OVERTEMP (Prerequisite: The XOTW ports, which are monitored every 10 ms, become low three times in succession.) Conditions: The above prerequisite is upheld, and the conditions for an overcurrent detection are met. 5. Pr

34、ocess when the protection circuits are activated The unit is shut down within 30 ms after abnormality detection then the volume level is set to 0. The unit can be turned on immediately after the shutdown. SX-SW404 61 5678 56 7 8 C D F A B E 7.1.6 CONDITIONS FOR SWITCHING THE ROTATION SPEED OF THE FA

35、N A fan is provided with this unit. Its rotation speed can be switched between low and high under the following conditions. 1. Conditions for switching the rotation speed from low to high In a case where an audio signal is input and the main volume becomes VOL 20 or more The rotation speed is not sw

36、itched to high immediately after the main volume becomes VOL 20 but with a delay of 30 seconds. If a digital audio signal is not input, the rotation speed is not switched to high even if the main volume becomes VOL 20 or more. If the function is ANALOG IN (AUX), even if there is no audio signal inpu

37、t, 30 seconds after the main volume becomes VOL 20 or more, the rotation speed is switched to high. 2. Conditions for switching the rotation speed from high to low If the main volume becomes less than VOL 20 During muting If a digital audio signal is not input If DIR IC has gone to an unlocking stat

38、e, such as during function selection or surround selection Note: The rotation speed is immediately switched to low when one of the above conditions is met. 3. Fan drive circuit and drive voltage The fan drive circuit and the drive voltages at low/high rotation speed are shown below: + VSFAN 2SD1858X

39、 1k 10220 0.1 x 2 10/50 UDZS8R2(B) Transistor for switching the drive voltage between 7 V and 12 V Note: The above voltage values are references. They differ from product to product. Zener diode for output voltage stability (7 V) VSF+12 PowerVoltage (V) Low speed, no digital stream signal (except wh

40、en the function setting is ANALOG IN) VSF+1212.9 VSFAN7.1 Low speed, with audio input, with VOL 19 or less VSF+1214.3 VSFAN7.2 High speed, with VOL 20 or more VSF+1214.2 VSFAN11.3 SX-SW404 62 1234 1234 C D F A B E 7.1.7 COMPATIBILITY AMONG THE SX-SW77 SERIES, SW-SW404 SERIES AND SX-X360 Compatibilit

41、y among the SX-SW77 series, SX-SW404 series, and SX-X360 About compatibility among the SX-SW77 series (SW receiver I), SX-SW404 series (SW receiver II), and SX-X360 (SW receiver II, XBOX model) All the above-mentioned models comprises of the Main unit and the Display unit. For a case in which either

42、 component is brought to a service station by a customer, the service station must be provided with the SX-SW77 series model (SW receiver I) to be used for servicing. The SX-X360 is not provided for servicing. As for the SX-SW404 series (SW receiver II,) the successor model of SX-SW77 series, the di

43、splay is the same as that for the SX-SW77 series. So, there is a full compatibility between them. A blue LED is added to the display of the SX-X360. See below for compatibility and what should be noted for the SX-X360: Component to be repaired Unit to be used for servicing Speaker settings No proble

44、m for connection Check if the blue LED on the Display unit of the SX-X360 always lights. If it does not, the LED itself or the lighting circuit for the LED on the Display unit is defective. A failure in the Display unit can be diagnosed with the combination of these units. SX-X360 Display unit SX-SW

45、77 series Main unit No problem for connection Diagnosis is impossible for failure of the blue LED on the Display unit of the SX-X360 (not lit). Because the lighting circuits for the LED are on both the Main unit and Display unit, a failure point cannot be diagnosed only with the Main unit. A failure

46、 in the Main unit, other than of the blue LED, can be diagnosed with the combination of these units. SX-X360 Main unit SX-SW77 series Display unit SX-SW77 series (SW receiver I) SX-SW77 SX-SW55 Reference model SX-SW950 SX-SW100 SX-E230 SX-06SW SX-SW404 series (SW receiver II) SX-SW404 SX-SW606 Refer

47、ence model SX-SW505HX SX-SW260 SX-SW560 SX-SW303 SX-SW505 SX-SW707 SX-07SW Model numbers of the SX-SW77 series and SX-SW404 series SX-SW404 63 5678 56 7 8 C D F A B E 7.1.8 DISASSEMBLY 1Remove the two screws. 2Remove the one screw. 3Remove the display cover. Display cover 4Remove the three screws. 5

48、Unhook the two hooks. 6Remove the FL and CONNECT Assys. DISPLAY Unit (AXX7204)1 11 2 4 5 4 6 3 4 Rear view Rear view 5 FL Assy D CONNECT Assy C DISPLAY Unit (AXX7212)2 Note: Even if the unit shown in the photos and illustrations in this manual may differ from your product, the procedures described h

49、ere are common. 1Unhook the two hooks. 2Unhook the two hooks. 3Remove the stand. Display cover Stand 4Remove the six screws. 5Remove the one screw. 6Remove the display cover. 6 4 4 5 444 4 1 2 2 3 1 Rear view Rear view FL Assy D CONNECT Assy C SX-SW404 64 1234 1234 C D F A B E 1Remove the four screws. 2Remove the speaker. 3Disconnect the connection cord. Speaker4 3 3 Rear view Speaker Speaker Connection cord 11 11 2 Cosmetic baffle 1Insert a thin slot screwdriver