Yamaha-XP2500-pwr-sm(1) 维修电路原理图.pdf

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1、SERVICE MANUALPA011814XP1000: 200512-134400XP2500: 200512-176400XP3500: 200512-207900 Copyright (c) Yamaha Corporation. All rights reserved. M 06.02II CONTENTS（目次）SPECIFICATION（総合仕様） .3DIMENSIONS（寸法図）.5PERFORMANCE GRAPHS（特性図） .5PANEL LAYOUT（） .6CIRCUIT BOARD LAYOUT（） .7WIRING（結線図） .9DISASSEMBLY PROC

2、EDURE（分解手順） .10IC BLOCK DIAGRAM（IC 図） .16CIRCUIT BOARDS（基板図） .16INSPECTIONS（検査）.26/31BLOCK DIAGRAM（）OVERALL CIRCUIT DIAGRAM（総回路図）PARTS LISTPOWER AMPLIFIERXP1000XP2500XP3500RadioFans.CN 收音机爱 好者资料库XP1000/XP2500/XP350026ScopeThis inspection specifications is applied to the power amplifier XP1000/XP2500

3、/XP3500.1.Power Source/Frequency2.Preparation for STEREO/PARALLEL modeAttenuator 0(MAX) (Both Channel) Input terminalcannon type connector: 2PIN-HOT/3PIN-COLD/1PIN-GND MODE switchSTEREO GAIN switch32dB HPF switch OFF (Both Cannel) Load resistor8 +/- 1% Unless otherwise specified, the operation shall

4、 be both channels drive. Unless ohterwise specified, the input signal shall be high quality sine wave.3.Inspection and Adjustment3. 1 POWER LED, PROTECTION LED and Power on muting timePOWER LED and PROTECTION LED shall light when the POWER switch is turned on.2.5 +/- 1 seconds after the power switch

5、 is turned on, PROTECTION LED shall lights off. 3. 2Fan and TEMP LED The fan shall operate when short circuit on the two jumper wires that mounted of DC circuit board marked FAN-C. The TEMP LED shall lights up when short circuit on the two jumper wires that marked TM-C. 3. 3Idle current Connect the

6、input terminal to the GROUND and adjust VR101(channel A) and VR102(channel B) on the PA UNIT so that the DC voltage of Vb between the pin1 and pin2 of CN108(channel A) and the CN107(channel B) shall be 0.5 +/- 0.1mV. After finishing all inspections, adjust the Vb again to 0.5 +/- 0.1mV. 3. 4DC Volta

7、ge of output terminalConnect the input terminal to the GROUND and measure the DC voltage Vdc of the output terminal shall be 0 +/- 75mV. 3. 5Gain3. 5. 1 Nominal Gain The output voltage should be +22.0 +/- 0.5dBu when input signal is 1kHz, -10.0dBu. 3. 5. 2 GAIN switch Set the Gain SW to 26dB. With 1

8、kHz -10dBu input signal, the output voltage shall be +16.0 +/- 0.5dBu. Set the GAIN switch to +4dBu. With 1kHz -10dBu input, the output voltage shall be as following table.3. 5. 3 AttenuatorSet the input attenuator to -10dB. With 1kHz -10dBu input signal, the output voltage shall be +12.0 +/- 3.0dB.

9、 3. 5. 4 PARALLE MODESet the MODE switch to PARALLEL. Apply 1kHz -10dBu signal to input terminal of channel A. Input signal must not be applied to input terminal of channel B when PALLEL MODE. At this time, the output voltages of both channels shall be +22.0 +/- 0.5dBu. XP3500 XP2500 XP1000 +22.7 dB

10、u +/-0.5 dBu+21.2 dBu +/-0.5 dBu +17.2 dBu +/-0.5 dBuFrequencyVoltageDestination60 Hz120 V %U, T50 Hz230 V %H, B, K, O50 Hz240 V %A+2-0+2-0+2-0I INSPECTIONRadioFans.CN 收音机爱 好者资料库27XP1000/XP2500/XP35003. 6 Frequency response Input signals are each 20Hz, 1kHz and 20kHz, -10dBu. The output voltage shal

11、l be -0.5 +/- 0.5dB at 20Hz and 20kHz compared to the 1kHz. Set HPF switch to 20Hz. With 20Hz -10dBu input signal, output voltage shall be -3.0 +/- 2.0dB compared to the value with 1kHz -10 dBu input signal at HPF switch OFF. Set HPF switch to 55Hz. With 55Hz -10dBu input signal, output voltage shal

12、l be -3.0 +/- 2.0dB compared to the value with 1kHz -10 dBu input signal at HPF switch OFF. 3.7 Distortion Factor Input signals are each 20Hz and 20kHz, the distortion shall be less than 0.1% when output level as follows. This inspection should have been finished within 30 seconds. 3.8 Cross talk In

13、put signal is 1kHz to the channel A, and connect between the input terminals of channel B (2pin-hot and 3pin-cold) by 600 ohms. Set the output level of channel A as following “Output level of the channel signal applied”. The output voltage of channel B shall be less than following “Output level of t

14、he channel terminated with 600 ohms” The conditions of channel A and channel B are replaced and inspected. Both the load resistor and the measurement instruments shall be connected to 5-way terminals (SP303). DIN AUDIO filter shall be used for the measurements. 3.9 Output Noise level Connect between

15、 the input terminals (2pin-hot and 3pin-cold) by 600 ohms. The noise level of the output terminal shall be less than -65dBu. Set the input attenuator to MIN. The noise level shall be less than -70dBu. DIN AUDIO filter shall be used for the measurements. 3.10 Stability Connect only capacitance of 0.0

16、1uF(Polyester film capacitor) to output terminal. The overshoot and the ringing should be as follows. Input signal is 1KHz, -10dBu square wave. Overshoot Vp/Vo 2.5 Ringing: within 7 waves and no oscillation XP3500 XP2500 XP1000 28.29 V(350 W + 350 W)44.73 V(250 W + 250 W)52.92 V(100 W + 100 W)XP3500

17、 XP2500 XP1000 28.3 dBu(175 W)32.3 dBu(125 W)33.7 dBu(50 W)-41.7 dBu-37.7 dBu-36.3 dBuOutput level of the channelsignal applied Output level of the channel terminated with 600 ohms VoVpRinging Waves XP1000/XP2500/XP3500283.11 Protection circuit for DC fault Disconnect of load resistor from output te

18、rminal. PROTECTION LED shall light up within 2 seconds when short circuit on the two jumper wires that mounted of PCB ASSY DC circuit marked DC-C. The LED shall light off within 10 seconds after getting the short off. 3.12 Efficiency (1) The primary electrical power shall be 130 +/- 20W when input s

19、ignal is 1kHz, -6.6dBu. (2) The primary electrical power shall be as follows when connect between the input terminals (2pin-hot and 3pin-cold) by 600 ohms. 3.13 VI limiter and compressor Connect 1 ohm (+/- 5%) load resistor to output terminal. Apply to the input terminal at 1 kHz the signal of level

20、 as shown below. The output voltage shall be as follows and the distortion shall be less than 5%. Then, CLIP LED shall light up. This inspection should have been finished within 30 seconds. This test is individually executed in each channel. 3.14 SIGNAL LED SIGNAL LED shall lights up when input sign

21、al is 1kHz, -23dBu. This test is individually executed in each channel. 2.15 MONITOR/REMOTE 2.15.1 PreparationThe inspection circuit described on Fig.1 is connected MONITOR/REMOTE terminal (JK304). The tolerance of the connected resistor shall be 1% or less and the rated power is shall be 1/4W or mo

22、re. The tolerance of the connected DC voltage shall be 1% or less. 2.15.2 Output Level The output voltage of 14pin to 15pin of JK304 shall be -4.8 +/- 1dBu when input signal is 1kHz -10.0dBu. 2.15.3 Mute and Protection Status 1kHz -10dBu signal is applied to input terminal. The DC voltages of 10pin

23、and 11pin of JK304 shall be +2 +/- 0.5V. When SW1 is turned on, the DC voltage of 11pin of JK304 shall be less than 0.5V and the output level of channel A output terminal shall be less than -30dBu. When SW2 is turned on, the DC voltage of 10pin of JK304 shall be less than 0.5V and the output level o

24、f channel B output terminal shall be less than -30dBu. XP3500 XP2500 XP1000 -7.5 dBu-6.5 dBu-1.5 dBu6.5 +/- 3 VInput signal levelOutput signal level10 +/- 3 V16 +/- 4 VXP3500 XP2500 XP1000 15 +/- 10W 20 +/- 10W 25 +/- 10W 5 pin2 pin3 pin4 pin6 pin7 pin8 pin9 pin10 pin11 pin12 pin13 pin14 pin15 pin1

25、pin7.5 k ohms180 ohms7.5 k ohms180 ohmsSW1SW21.5 k ohms330 ohmsSW3SW45 VThese pins are connected to MONITOR/REMOTE terminnal JK304.Fig. 1 29XP1000/XP2500/XP35003.15.4 Model ID When the SW3 is turned on, the DC output voltage of 3pin of JK304 shall be within the range specified in the ID-V of followi

26、ng table. 3.15.5 StandbyWhen the SW4 is turned on, the POWER LED light up to orange and the primary electrical power shall be less than 5W. 4. Preparation For BRIDGE mode Attenuator 0(MAX) Effective only channel A. Input terminalCannon type connector: 2PIN-HOT/3PIN-COLD/1PIN-GND MODE switchBRIDGE GA

27、IN switch32 dB HPF switch OFF (Both Cannel) Load resistor8 ohms + 8 ohms +/- 1 %For items of BRIGE mode, the input signal shall be applied only to input terminal of channel A. It must be applied to input terminal of channel B. Connection for measuring: Measure the output at the point as shown below.

28、 5. Inspection 5.1 GainThe output voltage shall be +28.0 +/- 1.0 dBu when input signal is 1kHz, -10.0 dBu. 5.2 Frequency response Input signals are each 20 Hz, 1kHz and 20 kHz, -10 dBu. The output voltage shall be -0.5 +/- 0.5 dB at 20 Hz and 20 kHz compared to the 1kHz. 5.3 Distortion Factor Input

29、signals are each 20 Hz and 20 kHz. The distortion shall be less than 0.1% when output voltage as follows. This inspection should have been finished within 30 seconds. 5.4 Output Noise level Connect between the input terminals (2pin-hot and 3pin-cold) by 600 ohms. The noise level of output terminal s

30、hall be less than -60 dBu. Next, set the input attenuator to MIN. The noise level shall be less than -65 dBu. DIN AUDIO filter shall be used for the measurements. 6.Factory Settings Attenuator MIN (Both Cannel) MODE switch STEREO GAIN switch 32 dB HPF switch OFF (Both Cannel) XP3500 XP2500 XP1000 2.

31、97ID-V+/- 0.06 V2.73+/- 0.06 V2.50+/- 0.06 V88XP3500orXP2500orXP1000RRINPUT+ MEASURINGINSTRUMENTA+B+INPUT- XP3500 XP2500 XP1000 56.58 V89.46 V105.84 VXP1000/XP2500/XP350030 適用範囲XP1000/XP2500/XP3500規定。1. 電源電圧/周波数2. STEREO/PARALLEL準備Attenuator 0(MAX) (Both Channel) Input terminalcannon type connector:

32、 2PIN-HOT/3PIN-COLD/1PIN-GND MODE switchSTEREO GAIN switch32dB HPF switch OFF (Both Cannel) Load resistor8 +/- 1% 特指定無場合、両駆動。 特指定無場合、入力信号高品位波。3. 検査及調整3. 1 時間及POWER LED, PROTECTION LED 電源投入時、POWER LEDPROTECTION LED点灯。 電源投入後、2.5 1秒、PROTECTION LED消灯。3. 2 Fan及TEMP LED DCFAN-C書枠内2本線時、FAN回転確認。TM-C書枠内2本線時、

33、TEMP LED点灯確認。3. 3 電流 入力端子接地、PAVR101(A)VR102(B)調整、CN108(A) CN107(B)1-2番端子間直流電圧Vb0.5 0.1 mV。 全検査終了後、 再度Vb0.5 0.1 mV調整。3. 4 出力端子、直流電圧 入力端子接地、出力端子直流電圧Vdc測定、0 75 mV確認。 3. 5 利得3. 5. 1 公称 入力端子1 kHz, -10.0 dBu正弦波入力時、+22.0 0.5 dBu出力電圧得確認。 3. 5. 2 GAINGAIN 26 dB。 入力端子1kHz, -10 dBu正弦波入力、出力電圧 +16.0 0.5 dBu確認。 G

34、AIN +4 dBu。 入力端子1 kHz, -10 dBu正弦波入力、出力電圧下表値確認。 3. 5. 3 -10 dB設定、入力端子1 kHz, -10.0 dBu正弦波入力時、出力電圧 +12.0 3.0 dB以内確認。 3. 5. 4 MODEPARALLEL。 1 kHz, -10 dBu正弦波A入力端子入力。 PARALLEL、B入力端子信号入力。 、両出力電圧 +22.0 0.5 dBu確認。 XP3500 XP2500 XP1000 +22.7 dBu +/-0.5 dBu+21.2 dBu +/-0.5 dBu +17.2 dBu +/-0.5 dBu周波数電圧50 Hz10

35、0 V %+2-0I 検査31XP1000/XP2500/XP35003. 6 周波数特性 20 Hz, 1 kHz, 20 kHz, -10 dBu信号入力時、出力電圧1 kHz出力電圧基準20 Hz, 20 kHz -0.5 0.5 dB確認。 HPF20 Hz。 20 Hz, -10 dBu信号入力時、出力電圧HPFOFF1 kHz, -10 dBu入力加出力電圧基 準-3.0 2.0 dB以内確認。 HPF55 Hz。 55 Hz, -10 dBu信号入力時、出力電圧HPFOFF1 kHz, -10 dBu入力加出力電圧基 準 -3.0 2.0 dB以内確認。 3. 7 歪率入力端子2

36、0Hz, 20kHz信号入力下表出力得時歪率0.1%以下確認。 検査、30秒以内終了。 3. 8 A1kHz入力、B入力端子間(2 pin-hot3 pin-cold)600 接続。A出力下表“Output level of the channel signal applied”示値。 、B出力、下表“Output level of the channel terminated with 600 ohms”示値以下 確認。次AB入換検査。負荷抵抗、測定器5-way端子接続。 測定DIN AUDIO filter用。 3. 9 出力入力端子間(2 pin-hot3 pin-cold)600接続。

37、出力端子発生測定、-65 dBu以下 確認。MIN、-70 dBu以下確認。 測定際DIN AUDIO filter用。 3. 10 安定度 負荷純容量0.01F()時、発振以下条件満。入力信号、1 KHz, -10 dBu矩形波。 Vp/Vo 2.5 7波以内収束、発振生確認。 XP3500 XP2500 XP1000 28.29 V(350 W + 350 W)44.73 V(250 W + 250 W)52.92 V(100 W + 100 W)XP3500 XP2500 XP1000 28.3 dBu(175 W)32.3 dBu(125 W)33.7 dBu(50 W)-41.7 d

38、Bu-37.7 dBu-36.3 dBuOutput level of the channelsignal applied Output level of the channel terminated with 600 ohms VoVpRinging Waves XP1000/XP2500/XP3500323. 11 回路 出力端子負荷抵抗接続外。 DCDC-C書枠内2本線時、 2秒以内PROTECTION LED点灯確認。 10秒以内LED消灯確認。 3. 12 効率(1) 1 kHz, -6.6 dBu信号入力、一次電力測定130 +/- 20 W 範囲内確認 (2) 入力端子間(2 p

39、in-hot3 pin-cold)600 接続、一次電力測定下表範囲内確認 3. 13 VI及出力端子負荷(5%)接続1 kHz下表信号入力端子印加。出力電圧 下表範囲確認。、歪率5%以下、CLIP LED点灯確認。 各別行。 検査、30秒以内終了。 3. 14 SIGNAL LED 1kHz, -23dBu正弦波入力、SIGNAL LED点灯確認。 各別行。 3. 15 / 3. 15. 1 準備Fig. 1検査回路MINITOR/REMOTE端子(JK304)接続。接続抵抗誤差1%以下、定格電力1/4 W以上。 直流電源電圧誤差1%以下使用。 3. 15. 2 出力入力端子1 kHz, -

40、10 dBu信号入力JK30414及15出力電圧 -4.8 1.0 dBu確認。 3. 15. 3 及 入力端子1 kHz, -10 dBu信号入力。 JK30410pin及11pin直流電圧 +2 0.5 V確認。 SW1ON、11 pin直流電圧0.5 V以下、A ch出力端子電圧-30 dBu以下確認。SW2ON、10 pin直流電圧0.5 V以下、B ch出力端子電圧-30 dBu以下確認。 XP3500 XP2500 XP1000 -7.5 dBu-6.5 dBu-1.5 dBu6.5 +/- 3 V 入力信号出力信号10 +/- 3 V 16 +/- 4 VXP3500 XP250

41、0 XP1000 15 +/- 10W 20 +/- 10W 25 +/- 10W 5 pin2 pin3 pin4 pin6 pin7 pin8 pin9 pin10 pin11 pin12 pin13 pin14 pin15 pin1 pin7.5 k ohms180 ohms7.5 k ohms180 ohmsSW1SW21.5 k ohms330 ohmsSW3SW45 VThese pins are connected to MONITOR/REMOTE terminnal JK304.Fig. 1 33XP1000/XP2500/XP35003. 15. 4 IDSW3ON、JK3

42、043DC出力電圧下表”ID-V”範囲内確認。 3. 15. 5 SW4ON、POWER LED橙色点灯、1次電力5 W以下確認。 4. BRIDGE準備Attenuator0(MAX) Effective only channel A. Input terminalCannon type connector: 2PIN-HOT/3PIN-COLD/1PIN-GND MODE switchBRIDGE GAIN switch32dB HPF switch OFF (Both Cannel) Load resistor8 ohms + 8 ohms +/- 1%BRIDGE検査項目、入力信号A入

43、力端子入力。 B入力端子信号入力。 測定器接続：下記接続、出力測定。5. 検査5. 1 利得 1 kHz, -10.0 dBu信号入力時、+28.0 1.0 dBu出力電圧得確認。5. 2 周波数特性 20 Hz, 1 kHz, 20 kHz, -10 dB信号入力時、出力電圧1 kHz出力電圧基準20 Hz, 20 kHz -0.5 0.5 dB以内確認。 5. 3 歪率 入力端子20 Hz, 20 kHz信号入力下表出力電圧得時歪率0.1%以下確認。検査、30秒以内終了。 5. 4 出力 入力端子間(2 pin-hot3 pin-cold)600 接続。 出力端子発生測定、-60 dBu以

44、下確認。次MIN、-65 dBu以下確認。 測定際DIN AUDIO filter用。6. 出荷 Attenuator MIN (Both Cannel) MODE switch STEREO GAIN switch 32 dB HPF switch OFF (Both Cannel) XP3500 XP2500 XP1000 2.97ID-V+/- 0.06 V2.73+/- 0.06 V2.50+/- 0.06 V88RRINPUT+ 測定器 XP3500又XP2500又XP1000A+B+INPUT- XP3500 XP2500 XP1000 56.58 V89.46 V105.84 V

45、CIRCUIT DIAGRAMI CONTENTS（目次）IC & DIODE OUTSIDE FIGURE（外形図） . 2BLOCK DIAGRAM（） . 3OVERALL CIRCUIT DIAGRAM（総回路図） DM 1/2. 4 DM 2/2. 5 SUB. 6 PAL. 7Note : See parts list for details of circuit board component parts.（注意: 部品詳細参照下。）The 3-digit number indicates the destination page.(3桁数字信号行先数示。)This indica

46、tes the location of the counter inter-sheet connector.(The alphabet indicates horizontal direction and the numberindicates vertical direction.)対応間示。(水平方向、数字垂直方向)Notation for Circuit Diagrams（回路図表記上注意）1. How to identify inter-sheet connectors（間読方）Signal name (信号名)to DC 003: C10DC WARNINGComponents ha

47、ving special characteristics are marked and must be replaced with parts having specification equal to those originally installed.（安全上注意）印部品、 安全維持重要部品。 交換場合、 安全必指定部品使用下。Capacitor（）（）: Ceramic Capacitor（）（）: Mylar Capacitor（）（）: Flame Proof C. Resistor（）（）:Mica Capacitor（） 規格認定: Capacitor（規格認定）Resisto

48、r（抵抗）（）:Flame Proof C. Resistor（） 酸金:Metal Oxide Filme Resistor（酸化金属被膜抵抗）POWER AMPLIFIERXP1000/XP2500/XP35002GNJM7815FA (XD853A00)REGULATOR +15V DC: IC401GNJM7915FA (XD854A00)REGULATOR -15V DC: IC402GNJM78M05FA (XJ604A00)REGULATOR +5V DC: IC4411 : OUTPUT2 : INPUT3 : COMMON1 : OUTPUT2 : COMMON3 : INP

49、UT 1 : OUTPUT2 : COMMON3 : INPUT 3?I BLOCKDIAGRAM（） ?I BLOCKDIAGRAM（） ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

50、? ? ? ? ? ? ?4BACDEFGHIJKLMNOPQRSTUVWX2134567891011121314151617I DC 1/2, PSW CIRCUIT BOARD（DC1/2、PSW回路図） (XP1000/XP2500/XP3500)I DC 1/2, PSW CIRCUIT BOARD（DC1/2、PSW回路図 ）(XP1000/XP2500/XP3500)XP1000/XP2500/XP3500DCto PAL-CN10128CC1-2000007702-1 2to LEDto IO(3/4)to PALto IO 3/4to FANPSWto DC 005:J3to