Yamaha-XP2500-pwr-sm电路图 维修手册.pdf

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1、SERVICE MANUAL PA 011814 XP1000: 200512-134400 XP2500: 200512-176400 XP3500: 200512-207900 Copyright (c) Yamaha Corporation. All rights reserved. M 06.02I I CONTENTS（目次） SPECIFICATION（総合仕様） .3 DIMENSIONS（寸法図）.5 PERFORMANCE GRAPHS（特性図） .5 PANEL LAYOUT（） .6 CIRCUIT BOARD LAYOUT（） .7 WIRING（結線図） .9 DIS

2、ASSEMBLY PROCEDURE（分解手順） .10 IC BLOCK DIAGRAM（IC 図） .16 CIRCUIT BOARDS（基板図） .16 INSPECTIONS（検査）.26/31 BLOCK DIAGRAM（） OVERALL CIRCUIT DIAGRAM（総回路図） PARTS LIST POWER AMPLIFIER XP1000 XP2500 XP3500 RadioFans.CN 收音机爱 好者资料库 XP1000/XP2500/XP3500 26 Scope This inspection specifications is applied to the p

3、ower amplifier XP1000/XP2500/XP3500. 1.Power Source/Frequency 2.Preparation for STEREO/PARALLEL mode Attenuator 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

4、 specified, the operation shall be both channels drive. Unless ohterwise specified, the input signal shall be high quality sine wave. 3.Inspection and Adjustment 3. 1 POWER LED, PROTECTION LED and Power on muting time POWER LED and PROTECTION LED shall light when the POWER switch is turned on. 2.5 +

5、/- 1 seconds after the power switch 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

6、TM-C. 3. 3Idle current Connect the 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 a

7、gain to 0.5 +/- 0.1mV. 3. 4DC Voltage of output terminal Connect the input terminal to the GROUND and measure the DC voltage Vdc of the output terminal shall be 0 +/- 75mV. 3. 5Gain 3. 5. 1 Nominal Gain The output voltage should be +22.0 +/- 0.5dBu when input signal is 1kHz, -10.0dBu. 3. 5. 2 GAIN s

8、witch Set the Gain SW to 26dB. With 1kHz -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 Attenuator Set the input attenuator to -10dB. With 1kHz -10dBu input signal, the o

9、utput voltage shall be +12.0 +/- 3.0dB. 3. 5. 4 PARALLE MODE Set 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 +

10、/- 0.5dBu. XP3500 XP2500 XP1000 +22.7 dBu +/-0.5 dBu +21.2 dBu +/-0.5 dBu +17.2 dBu +/-0.5 dBu FrequencyVoltageDestination 60 Hz120 V %U, T 50 Hz230 V %H, B, K, O 50 Hz240 V %A +2 -0 +2 -0 +2 -0 I INSPECTION RadioFans.CN 收音机爱 好者资料库 27 XP1000/XP2500/XP3500 3. 6 Frequency response Input signals are ea

11、ch 20Hz, 1kHz and 20kHz, -10dBu. The output voltage shall 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

12、55Hz. With 55Hz -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. 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

13、 have been finished within 30 seconds. 3.8 Cross talk Input 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 c

14、hannel B shall be less than following “Output level of the 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

15、the measurements. 3.9 Output Noise level Connect between 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 meas

16、urements. 3.10 Stability Connect only capacitance of 0.01uF(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 +

17、 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 dBu-37.7 dBu-36.3 dBu Output level of the channel signal applied Output level of the channel terminated with 600 ohms Vo Vp Ringing Waves RadioFans.CN 收音机爱 好者资料库 XP100

18、0/XP2500/XP3500 28 3.11 Protection circuit for DC fault Disconnect of load resistor from output terminal. 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

19、 the short off. 3.12 Efficiency (1) The primary electrical power shall be 130 +/- 20W when input signal 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 (

20、+/- 5%) load resistor to output terminal. Apply to the input terminal at 1 kHz the signal of level 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

21、 individually executed in each channel. 3.14 SIGNAL LED SIGNAL LED shall lights up when input signal is 1kHz, -23dBu. This test is individually executed in each channel. 2.15 MONITOR/REMOTE 2.15.1 Preparation The inspection circuit described on Fig.1 is connected MONITOR/REMOTE terminal (JK304). The

22、 tolerance of the connected resistor shall be 1% or less and the rated power is shall be 1/4W or more. 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 Mu

23、te and Protection Status 1kHz -10dBu signal is applied to input terminal. The DC voltages of 10pin 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. Whe

24、n SW2 is turned on, the DC voltage of 10pin of JK304 shall be less than 0.5V and the output level of channel B output terminal shall be less than -30dBu. XP3500 XP2500 XP1000 -7.5 dBu-6.5 dBu-1.5 dBu 6.5 +/- 3 V Input signal level Output signal level10 +/- 3 V16 +/- 4 V XP3500 XP2500 XP1000 15 +/- 1

25、0W 20 +/- 10W 25 +/- 10W 5 pin 2 pin 3 pin 4 pin 6 pin 7 pin 8 pin 9 pin 10 pin 11 pin 12 pin 13 pin 14 pin 15 pin 1 pin 7.5 k ohms 180 ohms 7.5 k ohms 180 ohms SW1 SW2 1.5 k ohms 330 ohms SW3 SW4 5 V These pins are connected to MONITOR/REMOTE terminnal JK304. Fig. 1 29 XP1000/XP2500/XP3500 3.15.4 M

26、odel 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 following table. 3.15.5 Standby When 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 m

27、ode Attenuator 0(MAX) Effective only channel A. Input terminalCannon type connector: 2PIN-HOT/3PIN-COLD/1PIN-GND MODE switchBRIDGE GAIN 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 c

28、hannel A. It must be applied to input terminal of channel B. Connection for measuring: Measure the output at the point as shown below. 5. Inspection 5.1 Gain The 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

29、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 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

30、. 5.4 Output Noise level Connect between the input terminals (2pin-hot and 3pin-cold) by 600 ohms. The noise level of output terminal shall 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.

31、Factory Settings Attenuator MIN (Both Cannel) MODE switch STEREO GAIN switch 32 dB HPF switch OFF (Both Cannel) XP3500 XP2500 XP1000 2.97ID-V +/- 0.06 V 2.73 +/- 0.06 V 2.50 +/- 0.06 V 8 8 XP3500 or XP2500 or XP1000 R R INPUT+ MEASURING INSTRUMENT A+ B+ INPUT- XP3500 XP2500 XP1000 56.58 V89.46 V105.

32、84 V XP1000/XP2500/XP3500 30 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: 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

33、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、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

34、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 GAIN GAIN 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。 GAIN +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 MODEPARAL

35、LEL。 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 Hz100 V % +2 -0 I 検査 31 XP1000/XP2500/XP3500 3. 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

36、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20Hz, 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 cha

37、nnel 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。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。

38、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 dBu-37.7 dBu-36.3 dBu Output level of the channel signal applied Output level of the channel terminated wi

39、th 600 ohms Vo Vp Ringing Waves XP1000/XP2500/XP3500 32 3. 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 pin-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、CL

40、IP 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, -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

41、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 dBu 6.5 +/- 3 V 入力信号 出力信号10 +/- 3 V 16 +/- 4 V XP3500 XP2500 XP1000 15 +/- 10W 20 +/- 10W 25 +/- 10W 5 pin 2 pin 3 pin 4 pin 6 pin 7 pin 8 pin 9 pin 1

42、0 pin 11 pin 12 pin 13 pin 14 pin 15 pin 1 pin 7.5 k ohms 180 ohms 7.5 k ohms 180 ohms SW1 SW2 1.5 k ohms 330 ohms SW3 SW4 5 V These pins are connected to MONITOR/REMOTE terminnal JK304. Fig. 1 33 XP1000/XP2500/XP3500 3. 15. 4 ID SW3ON、JK3043DC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

43、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

44、.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以下確認。次MIN、 -65 dBu以下確認。 測定際DIN AUDIO filter用。 6. 出荷 Atte

45、nuator MIN (Both Cannel) MODE switch STEREO GAIN switch 32 dB HPF switch OFF (Both Cannel) XP3500 XP2500 XP1000 2.97ID-V +/- 0.06 V 2.73 +/- 0.06 V 2.50 +/- 0.06 V 8 8R R INPUT+ 測定器 XP3500 又 XP2500 又 XP1000 A+ B+ INPUT- XP3500 XP2500 XP1000 56.58 V89.46 V105.84 V CIRCUIT DIAGRAM I CONTENTS（目次） IC op

46、eration not restored automatically. VI limiter (RL 1 ): Limit the output. Power Supply ProtectionThermal: Power supply shutdown (transfomer temp 130 C) ; restored automatically. CoolingVariable-speed fan: x 1 Fan stop at heatsink temp 55 C Power Requirements UC: 120 V/60 Hz HB: 230 V/50 Hz A: 240 V/

47、50 Hz J: 100 V 50/60 Hz Dimensions (W x H x D)480 x 88 x 456 mm WeightXP3500 15 kg XP2500 14 kg XP1000 12 kg Included AccessoriesSecurity cover (with a hex wrench), Owners Manual I MONITOR/REMOTE（接続出力） Pin No.SignalDescription 1GND 2REMOTE CONTROLSTANDBYSTANDBY Control: Supply 5 VDC, 5 mADC 3MONITORMODEL IDXP3500: 1.5 k, XP2500: 1.8 k, XP1000: 2.2 k (Impedance to GND) 4REMOTE CONTROLNC NC5 6MUTE CH BMUTE Control: Connect to GND, +5 V, 1 mA 7MUTE CH A 8MONITORNC NC9 10PRO