Pioneer-DJM250-mix-sm电路图 维修手册.pdf

《Pioneer-DJM250-mix-sm电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Pioneer-DJM250-mix-sm电路图 维修手册.pdf（45页珍藏版）》请在收音机爱好者资料库上搜索。

1、ORDER NO. PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, 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

2、Road, #04-01, Singapore 159936 PIONEER CORPORATION2011 2011 Printed in Japan DJM-250-W RRV4278 DJ MIXER DJM-250-W DJM-250-K THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S). ModelTypePower RequirementRemarks DJM-250-WSVYXE8AC 100 V to 240 V DJM-250-WUXECBAC 100 V to 240 V DJM-250-WFLP

3、XEAC 100 V to 240 V DJM-250-WKXE5AC 100 V to 240 V DJM-250-WAXE5AC 100 V to 240 V DJM-250-KSVYXE8AC 100 V to 240 V DJM-250-KUXECBAC 100 V to 240 V DJM-250-KFLPXEAC 100 V to 240 V DJM-250-KKXE5AC 100 V to 240 V DJM-250-KAXE5AC 100 V to 240 V K-MZV NOV. RadioFans.CN 收音机爱 好者资料库 2DJM-250-W 1234 A B C D

4、E F 1234 SAFETY INFORMATION WARNING This product may contain a chemical known to the State of California to cause cancer, or birth defects or other reproductive harm. Health it is not meant for the casual do-it- yourselfer. Qualified technicians have the necessary test equipment and tools, and have

5、been trained to properly and safely repair complex products such as those 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,

6、 you should not risk trying to do so and refer the repair to a qualified service technician. 1. SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground (water

7、 pipe, conduit, etc.) by connecting a leakage current tester such as Simpson Model 229-2 or equivalent between the earth ground and all exposed metal parts of the appliance (input/output terminals, screwheads, metal overlays, control shaft, etc.). Plug the AC line cord of the appliance directly into

8、 a 120 V AC 60 Hz outlet and turn the AC power switch on. Any current measured must not exceed 0.5 mA. ANY MEASUREMENTS NOT WITHIN THE LIMITS OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. 2. PRODUCT SAFETY NOTICE Many

9、electrical and mechanical parts in the appliance have special safety related characteristics. These are often not evident from visual inspection nor the protection afforded by them necessarily can be obtained by using replacement components rated for voltage, wattage, etc. Replacement parts which ha

10、ve these special safety characteristics are identified in this Service Manual. Electrical components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety

11、 characteristics as the PIONEER recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product Safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current

12、 PIONEER Service Manual. A subscription to, or additional copies of, PIONEER Service Manual may be obtained at a nominal charge from PIONEER. Leakage current tester Reading should not be above 0.5 mA Device under test Test all exposed metal surfaces Also test with plug reversed (Using AC adapter plu

13、g as required) Earth ground AC Leakage Test (FOR USA MODEL ONLY) RadioFans.CN 收音机爱 好者资料库 3DJM-250-W 5678 5678 A B C D E F CONTENTS SAFETY INFORMATION.2 1. SERVICE PRECAUTIONS.4 1.1 NOTES ON SOLDERING.4 2. SPECIFICATIONS.5 3. BASIC ITEMS FOR SERVICE .6 3.1 CHECK POINTS AFTER SERVICING .6 3.2 JIGS LIS

14、T.6 3.3 PCB LOCATIONS.7 4. BLOCK DIAGRAM .8 4.1 OVERALL CONNECTION DIAGRAM.8 4.2 OVERALL BLOCK DIAGRAM.10 4.3 POWER BLOCK DIAGRAM .12 5. DIAGNOSIS .14 5.1 TROUBLESHOOTING.14 5.2 PROTECTION CIRCUIT.18 6. SERVICE MODE.19 6.1 TEST MODE.19 7. DISASSEMBLY .20 8. EACH SETTING AND ADJUSTMENT.25 9. EXPLODED

15、 VIEWS AND PARTS LIST.26 9.1 PACKING SECTION.26 9.2 EXTERIOR SECTION .28 10. SCHEMATIC DIAGRAM.32 10.1 MIXER and CH FADER PCB ASSYS.32 10.2 I/O, MASTER OUTPUT, BALANCE OUTPUT and PHONE PCB ASSYS.34 11. PCB CONNECTION DIAGRAM.36 11.1 MIXER and CH FADER PCB ASSYS.36 11.2 I/O, MASTER OUTPUT, BALANCE OU

16、TPUT and PHONE PCB ASSYS.40 12. PCB PARTS LIST.44 RadioFans.CN 收音机爱 好者资料库 4DJM-250-W 1234 A B C D E F 1234 1. SERVICE PRECAUTIONS 1.1 NOTES ON SOLDERING For environmental protection, lead-free solder is used on the printed circuit boards mounted in this unit. Be sure to use lead-free solder and a so

17、ldering iron that can meet specifications for use with lead-free solders for repairs accompanied by reworking of soldering. Compared with conventional eutectic solders, lead-free solders have higher melting points, by approximately 40 C. Therefore, for lead-free soldering, the tip temperature of a s

18、oldering iron must be set to around 373 C in general, although the temperature depends on the heat capacity of the PC board on which reworking is required and the weight of the tip of the soldering iron. Do NOT use a soldering iron whose tip temperature cannot be controlled. Compared with eutectic s

19、olders, lead-free solders have higher bond strengths but slower wetting times and higher melting temperatures (hard to melt/easy to harden). The following lead-free solders are available as service parts: Parts numbers of lead-free solder: GYP1006 1.0 in dia. GYP1007 0.6 in dia. GYP1008 0.3 in dia.

20、5DJM-250-W 5678 5678 A B C D E F 2. SPECIFICATIONS AC adapter Power.AC 100 V to 240 V, 50 Hz/60 Hz Rated current.800 mA Rated output.DC 5 V, 3 A General Main Unit Main unit weight.3.1 kg (6.83 lb) Max. dimensions.240 mm (W) 107.7 mm (H) 300.2 mm (D) (9.45 in. (W) 4.24 in. (H) 11.8 in. (D) Tolerable

21、operating temperature . +5 C to +35 C (+41 F to +95 F) Tolerable operating humidity. 5 % to 85 % (no condensation) Audio Section Sampling rate . 48 kHz A/D, D/A converter.24 bits Frequency characteristic CD/LINE/AUX/MIC .20 Hz to 20 kHz S/N ratio (rated output) CD.91 dB LINE.91 dB PHONO.86 dB MIC.80

22、 dB Total harmonic distortion (CD MASTER 1). 0.007 % Standard input level / Input impedance CD.12 dBu/10 k LINE.12 dBu/47 k PHONO.48 dBu/47 k MIC.52 dBu/10 k AUX 1 .18 dBu/10 k AUX 2, 3 .12 dBu/10 k Standard output level / Load impedance / Output impedance MASTER 1.+6 dBu/10 k/330 MASTER 2.+2 dBu/10

23、 k/1 k PHONES . +2 dBu/32 /33 Rated output level / Load impedance MASTER 1. +22 dBu/10 k MASTER 2. +18 dBu/10 k Crosstalk (CD).74 dB Channel equalizer characteristic HI. to + 9 dB (13 kHz) MID. to + 9 dB (1 kHz) LOW. to +9 dB (70 Hz) MIC/AUX equalizer characteristics HI.12 dB to +12 dB (10 kHz) LOW.

24、12 dB to +12 dB (100 Hz) Input/output terminals CD input terminal RCA pin jack.2 sets PHONO/LINE input terminals RCA pin jack.2 sets MIC input terminal Phone jack ( 6.3 mm).1 set AUX input terminal RCA pin jack.2 sets Mini phone jack ( 3.5 mm) .1 set MASTER output terminal RCA pin jacks.1 set BALANC

25、ED OUTPUT output terminal XLR connector.1 set PHONES output terminal Stereo phone jack ( 6.3 mm) .1 set CONTROL terminal Mini phone jack ( 3.5 mm) .2 sets The specifications and design of this product are subject to change without notice. (SVYXE8: 411-DJM250-842-HA) (FLPXE: 411-DJM250-841-HA) (KXE5:

26、 411-DJM250-845-HA) (UXECB: 411-DJM250-840-HA) AC adapter Power plug Operating instructions (SVYXE8: 502-DM250B-3136-HA) (UXECB: 502-DM250A-3135-HA) (FLPXE: 502-DM250F-3140-HA) (KXE5: 502-DM250E-3139-HA) (AXE5: 502-DM250D-3138-HA) Accessories (SVYXE8: 420-DJM250-362-HA) (FLPXE: 420-DJM250-361-HA) (F

27、LPXE: 420-DJM250-362-HA) (FLPXE: 420-DJM250-363-HA) (FLPXE: 420-DJM250-364-HA) (AXE5: 411-DJM250-844-HA) for Mexico, Taiwan, etc. for Hong Kong, Malaysia, Singapore, etc. for Australia, New Zealand, etc. for Thailand, etc. for UK 6DJM-250-W 1234 A B C D E F 1234 3. BASIC ITEMS FOR SERVICE 3.1 CHECK

28、POINTS AFTER SERVICING 3.2 JIGS LIST Item to be checked regarding audio Distortion Noise Volume too low Volume too high Volume fluctuating Sound interrupted See the table below for the items to be checked regarding audio. Items to be checked after servicing To keep the product quality after servicing, confirm recommended check points shown bel