Crownpb3sm电路图.pdf

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1、Power Base-3 the space is considered a character.) The seventh character is usually a hy- phen, though it may be a letter to indicate a revision or special note. The last character is called a check-digit, and is useful to Crown for internal tracking. Crown is in the process of converting to a new p

2、art number system. Length may vary from eight to twelve characters. There is still a letter prefix, then five numbers. These five numbers identify a type of part. The seventh character is a hyphen. Remaining char- acters identify the details of the type of part identified by the first part of the nu

3、mber. STANDARD AND SPECIAL PARTS Many smaller electrical and electronic parts used by Crown are stocked by and available from electronic supply houses. However, some electronic parts that appear to be standard are actually special. A part ordered from Crown will assure an acceptable re- placement. S

4、tructural items such as modules and panels are available from Crown only. ORDERING PARTS When ordering parts, be sure to give the product model, and include a description and part number (CPN/DPN) from the parts listing. Price quotes are available on request. SHIPMENT Shipment will be normally made

5、by UPS or best other method unless you specify otherwise. Shipments are made to and from Elkhart, Indiana USA, only. Estab- lished accounts with Crown will receive shipment freight prepaid and will be billed. All others will receive Crown Parts Department Mailing Address: PO Box 1000 Elkhart, IN USA

6、 46515-1000 Shipping Address: 57620 C.R. 105 Elkhart, IN USA 46517 Phone: (219) 294-8210 or: (219) 294-8211 Toll Free: (800) 342-6939 FAX: (219) 294-8301 Power Base-3 safe with all types of loads, even totally reactive loads. AC Mains: 120VAC at 60 Hz with standard 3 wire grounded 15A connector with

7、 single voltage trans- former and fan for North American units; 100VAC, 120VAC, 220VAC, and 240VAC at 50 or 60 Hz when equipped with universal transformer, applicable fan, and other applicable hardware with country specific power cord. Note that at 50 Hz fan speed is reduced. PERFORMANCE Frequency R

8、esponse: 0.1dB from 20 Hz to 20 kHz at 1 Watt. Phase Response: 10 from 10 Hz to 20 kHz at 1 Watt. Signal to Noise Ratio: A-weighted, better than 105 dB below full rated output. Better than 100 dB below full rated output from 20 Hz to 20 kHz. Total Harmonic Distortion (THD): 0.05% from 20 Hz to 1 kHz

9、, increasing linearly to 0.1% at 20 kHz at 500W. I.M. Distortion: 13V per microsecond. Damping Factor: 1000 from 10 Hz to 400 Hz. DC Offset: 10 millivolts. Input Impedance: Nominally 20K ohms balanced; 10K ohms unbalanced. Output Impedance: 10 milliohms in series with 17V/S. Initial Conditions: Cont

10、rols per standard. Procedure: Load each channel to 8 ohms. Inject a 10 kHz square wave to obtain 65 volts peak-to-peak at each output. Observe the slope of the square wave. It should typically measure 17 to 25 V/S. Also, the square wave must not include overshoot, ringing, or any type of oscillation

11、. TEST 11: CROSSTALK Spec: -60dB at 20 kHz. Initial Conditions: Controls per standard. Terminate input of channel not driven with 600 ohms. Procedure: 8 ohm load on each channel. Inject a 20 kHz sine wave into the Channel 1 input and increase output level to 62 VAC. Measure less than 62 mVAC at the

12、output of Channel 2. Inject a 20 kHz sine wave into the Channel 2 input and increase output level to 62 VAC. Measure less than 62 mVAC at the output of Channel 1. TEST 12: OUTPUT POWER Spec at 8 Ohm Stereo: 540W at 0.1% THD. Spec at 4 Ohm Stereo: 760W at 0.1% THD. International 8 Ohm Stereo:Internat

13、ional 8 Ohm Stereo:International 8 Ohm Stereo:International 8 Ohm Stereo:International 8 Ohm Stereo: 510W at 0.1% THD. International 4 Ohm Stereo:International 4 Ohm Stereo:International 4 Ohm Stereo:International 4 Ohm Stereo:International 4 Ohm Stereo: 680W at 0.1% THD. Initial Conditions: Control

14、s per standard. Procedure: Load each channel to 8 ohms. Inject a 1 kHz sine wave and measure at least 65.7 VAC at the output of each channel. Load each channel to 4 ohms. Inject a 1 kHz sine wave and measure at least 55.1 VAC. All power measurements must be at less than 0.1% THD. TEST 13: REACTIVE L

15、OADS Spec: No oscillations. Safe with all types of loads. Initial Conditions: Controls per standard. Procedure Capacitive: Load each channel to 8 ohms in parallel with 2 F. Inject a 20 kHz sine wave with 55 VAC output for 10 seconds. Procedure Inductive: Load each channel to 8 ohms in parallel with

16、159 Henries. Inject a 1 kHz sine wave with 35.8 VAC output for 10 seconds. Procedure Torture: Load each channel with the primary (red and black leads) of a DC-300A transformer (D 5781-6). Inject a 10 Hz sine wave at sufficient output level to cause 3 to 5 flyback pulses, for 10 seconds. Procedure Sh

17、ort: Inject a 60 Hz sine wave at 5 VAC minimum output. After establishing signal, short the output for 10 seconds. InOut .047 uF 1K Ohm Differenciator Circuit Power Base-3 either channel controls limiting in Parallel Mono Mode. Initial Conditions: Controls per standard; rag or other obstruction bloc

18、king fan so that it does not turn. Procedure: Load the amplifier to 4 ohms on each channel. Inject a 60 Hz sine wave and adjust for 35 Vrms at the output. After a few minutes observe a wave form similar to Figure 4. Remove the input signal from both channels and allow the amplifier to cool for a few

19、 minutes. Switch the amplifier to Parallel Mono and remove the load from Channel 1. Inject the signal into Channel 1 and observe that ODEP limiting occurs at the output of both channels. Remove the load from Channel 2, and install the load on Channel 1. Again, observe that both channels limit. Retur

20、n all amplifier controls to standard initial conditions. Remove the fan obstruction. TEST 15: LF PROTECTION Spec: Amplifier mutes for low frequency. Initial Conditions: Controls per standard. Procedure: No load. Inject a 0.5 Hz 6 volt peak-to-peak square wave, or a 2 Hz 6VAC sine wave into each chan

21、nel and verify that each channel cycles into mute. TEST 16: SIGNAL TO NOISE RATIO Spec: 100 dB below rated 8 ohm power 20 Hz to 20 kHz. 105 dB A-Weighted. Initial Conditions: Controls per standard. Short inputs. Procedure: Load each channel to 8 ohms. Measure less than 648 V at the output of each ch

22、annel (20 Hz- 20 kHz bandpass filter). TEST 17: TURN ON TRANSIENTS Spec: No dangerous transients. Initial Conditions: Controls per standard. Procedure: From an off condition, turn on the amplifier and monitor the output noise at the time of turn on. Note: Turn on noise may increase significantly if

23、the amplifier is cycled off and on. TEST 18: TURN OFF TRANSIENTS Spec: No dangerous transients. Initial Conditions: Controls per standard. Procedure: From an on condition, turn off the amplifier and monitor the output noise at the time of turn off. Note: Turn off noise may increase significantly if

24、the amplifier is cycled off and on. TEST 19: INTERMODULATION DISTORTION Spec at 0 dB Output: 0.01%. Spec at 35 dB Output: 0.05%. Initial Conditions: Controls per standard. Procedure: Load each channel to 8 ohms. Inject a SMPTE standard IM signal (60 Hz and 7 kHz sine wave mixed at 4:1 ratio) at 495

25、Watts (50.3 Volt RMS). With an IM analyzer measure less than 0.01% IMD. Repeat test at 35 dB (reference 495 Watts or 50.3 Volt RMS) and measure less than 0.05% IMD. TEST 20: CLIPPING Spec: No protective action during test. Initial Conditions: Controls per standard. Procedure: Load each channel to 8

26、ohms. Inject a 1 kHz sine wave at each input and drive output 6 dB into clip for 10 seconds. The amplifier should not activate any protective circuits (ODEP, Fault, or LF Protection). POST TESTING After completion of testing, if all tests are satisfactory, the amplifier controls should be returned t

27、o the posi- tions required by customer. If conditions are unknown or unspecified, factory settings are as follows: Level Controls: 9 to 11 OClock. Sensitivity Switch: 0.775V U.S., 1.4V International. Stereo/Mono Switch: Stereo. Ground Lift: Lift. Power: Off. Figure 4. ODEP Limiting Wave Form Power B

28、ase-3 & 1400CSL Amplifier Service Manual 16 Parts List (Non-Module) SUPPLIMENTAL ITEMS CPNITEMQTY D 4137-2Nylon Thumbscrew Washer4 C 3342-0Feet, Black Self-Stick4 A10087-7101210-32 .75 Machine (Rack Screw)4 K80607-3PB Series Owners Manual1 POWER SUPPLY CPNITEMQTY C 9837-3Breaker, 30A 250VAC (100-120

29、VAC)1 C 9839-9Breaker, 15A 250VAC (200-240VAC)1 A10285-33Fuse F1, .3A Slo Blow (120V 60Hz UL approved only)1 A10285-7Fuse F1, .5A AGC 1.25x.251 D 8598-1PB-3 Power Transformer (120V 60Hz Only)1 D 8601-31400CSL Power Transformer Universal Volt1 A10089-10832Screw, 8-32 2.0 Ph Machine4 H43344-3Primary V

30、oltage Jumpers (Set of Three)1 H43437-5Power Cord Assembly, NEMA (Standard US model)1 A10793-0503CPower Cord, EUR plug (European CSL)1 A10214-7Strain Relief, SR7N-2 Black1 H43450-8Power Switch Wires1 C 6487-0Switch, 2 Pole 22A Power Rocker1 H43065-4TransMotor (60 Hz Only)1 H43055-5TransMotor (Univer

31、sal)1 C 9939-7Fan Blade, 4 Inch CCW1 D 8439-8Bracket, Fan1 C 7062-06-32 X 5/16 FLTHD Screw1 C 8752-535A 400V Bridge Rectifier2 D 8438-0Bracket, Capacitor2 A10110-70812Screw, 8-32 X .750 Pan Head2 D 8639-36300F 150V Electrolytic Capacitor2 C 9870-410-32 X .38 PNHD with T254 A10095-4#10 External Star

32、Lockwasher4 A10098-51/4 Belleville Spring Washer4 D 6764-1Washer, Shoulder Cap Assembly4 H43469-8Blue Wires, Cap Assembly2 H43470-6Red Wires, Cap Assembly2 FUSE BOARD ASSEMBLY (MODULE Q43349-2) CPNITEMQTY C 5060-6Fuse Clip, PC Mount #9262 C 7817-7Tab, AMP .25 FASTON PC MOUNT22 P10426-8Fuse Board1 LE

33、D ASSEMBLY CPNITEMQT C 4342-9Enable LED, Amber1 P10068B4LED Board1 Power Base-3 & 1400CSL Amplifier Service Manual 17 Parts List (Non-Module) OUTPUT ASSEMBLY (ONE PER CHANNEL) CPNITEMQTY (PER CHANNEL) C 8187-4NPN Output Device4 C 8188-2PNP Output Device4 C 8573-5PNP Driver Transistor, TO-3P (2SA1186

34、)2 C 8574-3NPN Driver Transistor, TO-3P (2SC2837)2 D 7665-9Clip, TO-3P Mounting2 D 7666-7Bracket, TO-3P Heatsink2 C 8813-5Q318/Q418 Bias Servo MPSA18/MPS80971 B 5842-8Tubing, #23 TFE Thin Wall Red (For C 8813-5)Request in Inches C 5826-0S100/S200 Thermal Sense LM334Z1 B 5464-1Tubing, #24 Teflon Thin

35、 Wall (For C 5826-0)Request in Inches D 8774-8PTC Thermal Sensor 95DEGC1 A10315-1Screw, 6-32-.56 Hex Washer Head12 C 9491-9Screw, 6-32-.312 Taptite Pan Ph23 D 7796-2Silpad Insulator (Between Chassis and Heatsinks)1 D 7797-0Output Thru-Hole Pad Insulator1 D 8197-2Paper Shroud1 C 9387-9Rivet, Plastic2

36、 F12019-0Diode Heatsink Slug (Under diodes on Module)1 M21324-5Heatsink, Aluminum2 H43058-9Output Wires, Both Red and Black1 Output Module (See Module List)1 BACK PANEL ASSEMBLY CPNITEMQTY A10214-7Strain Relief (Power Cord)1 C 2823-0Dual Binding Post Assembly2 H43437-5Power Cord Assembly, NEMA (Stan

37、dard US Model)1 A10793-0503CPower Cord EUR Plug (European CSL)1 F12605-6Back Panel1 M46285-9Back Panel Assembly (w/ Binding Posts & Strain Relief) 1 A10019-8Nut, #8 32-2 Captive2 CHASSIS FRONT ASSEMBLY CPNITEMQTY A10090-70806Screw, 8-32-.375 Mach Ph Oval (Grille)3 A10090-70808Screw, 8-32-.5 Mach Ph

38、Oval (End Caps)4 A10101-5Washer, Nylon (Grille)3 A10173-1Clip, Grille Filter3 D 6944-9Air Filter1 D 8465J2End Cap2 F12435J7Grille1 C 6487-0Switch, 2 Pole 22A Power Rocker1 F12566J9Overlay, PB31 D 8638-5Overlay, 1400CSL1 Power Base-3 & 1400CSL Amplifier Service Manual 18 Parts List (Non-Module) MAIN

39、CHASSIS ASSEMBLY CPNITEMQTY A10086-70806Screw, 8-32 x .37 RDHD Ph2 A10086-10604Screw, 6-32 x .25 RDHD Ph2 A10094-3Washer, #6 Black Star3 A10094-4Washer, #6 Zinc Star2 A10094-6Washer, #8 Black Star4 A10099-5Washer, #8 Nylon Shoulder4 A10109-10822Screw, 8-18-1.375 Pan Ph2 A10110-70812Screw, 8-32-.75 T

40、aptite Pan Ph2 A10192-1Snap Bushing .54 C 6487-0Power Switch 22A Rocker 2 Pole1 C 6912-7Tension Retainer Board Support2 C 6913-5Spacer Nut, 1 inch2 C 6914-3Spacer Nut, .75 inch2 C 8812-75.5 Cable Tie5 C 8852-3.5 Locking PCB Support5 C 9491-9Screw, 6-32 x .312 Pan Head6 D 7600-6Ground Strap (DBP to C

41、hassis)1 D 7784-8Label, Sensitivity Switch1 D 8606-2Label, F1 Fuse Replacement1 F10787J3Back Panel Plate1 D 8501-5Cover, Top1 D 8548-6Cover, Bottom1 A10110-70605Screw, 6-32-.312 Taptite Ph (Covers)20 F12610-6Chassis1 Main Module (See Module List)1 Power Base-3 & 1400CSL Amplifier Service Manual 19 M

42、odule Information MODULE HISTORY The PB-3 and 1400CSL amplifiers were introduced in January of 1995. Since then there have been several updates and revisions, some of which called for new modules. The following is a list of Main and Output modules used up to this date, June 1995. It should be noted

43、that both the PB-3 and the 1400CSL use the same modules. OUTPUT MODULES: (left and right are identical) Q43339-3 Original Output Module, still in production. Uses P10429-2 board. MAIN MODULES: Q43353-4 Original Main Module on D 8679-9 board. Used until 6-14-95. Q43400-3 Main Module on D 8827-4 board

44、. FUSE MODULE: Q43349-2 See parts list on page 16 Power Base-3 & 1400CSL Amplifier Service Manual 20 Q43339-3 Output Module Parts List (P10429-2 Board) Q43339-3 Output Module for PB-3: CAPACITORS C01C 8511-5.047F C02C 8426-6.1F C03C 8426-6.1F C04C 6806-1.01F C05C 6806-1.01F C06C 6806-1.01F C07C 6807

45、-9.001F C08C 6810-3180pF C09C 6809-5220pF C43C 7697-3.01F 500V DIODES D01C 2851-11N4004 D02C 2851-11N4004 D03C 2851-11N4004 D04C 2851-11N4004 D05C 2941-01N5402 D06C 2941-01N5402 D07C 2941-01N5402 D08C 2941-01N5402 D09C 2851-11N4004 D10C 2851-11N4004 D11C 2851-11N4004 D12C 2851-11N4004 D13C 2851-11N4

46、004 D14C 2851-11N4004 INDUCTORS L00C 6592-6Output Coil L01C 3510-2470H L02C 3510-2470H TRANSISTORS Q17C 8508-1NPN 2SC3298B Q19C 8509-9PNP 2SA1306B Note: Q18, S100/200, Driver and Output Transistors are not included with the module. See the Output Assembly Parts List on page 17. RESISTORS R00A10266-7

47、50175 R01A10266-1011100 R02C 7778-15.6 flame proof R03C 6486-2.2 5W R04C 6486-2.2 5W R06C 6486-2.2 5W R07C 6486-2.2 5W R09C 7779-922 flame proof R10A10266-1011100 R11C 7317-82.7 5W R12A10266-2R742.7 2W R13A10266-750175 R14A10266-2R742.7 2W R16C 6486-2.2 5W R17C 6486-2.2 5W R19C 6486-2.2 5W R20C 6486

48、-2.2 5W R21C 7778-15.6 flame proof R22C 7779-922 flame proof R23C 6844-2250 Pot LS Bias R24A10266-133113K R25A10266-22212.2K R26C 6844-2250 Pot HS Bias R27A10266-3911390 R28A10266-133113K R29A10266-510151 R30A10265-10201 102 R41A10266-220122 R42A10266-220122 MISC. BoardP10429-2 JumpersC 5868-20 Ohm

49、Jumper (11) ClipsD 6414-3Q17/19 Hold Down J500J600C 9828-212 Pin Header Power Base-3 & 1400CSL Amplifier Service Manual 21 Q43353-4 Applicability: Main Module PB-3/1400CSL units. For Schematic See J0659-3. CAPACITORS C1C 3913-8470F C2C 3913-8470F C4C 6802-0.47F C5C 6806-1.01F C6C 6806-1.01F C7C 8897-8.1F C8C 5362-62.2uF C100C200C 5311-322F C101C201C 9464-610pF C102C202C 8576-8100uF C103C203C 6805-3.022F C104C204C 6805-3.022F C105C205C 6812-947pF C106C206C 6812-947pF C107C207C 8897-8.1F C108C208C 6814-512pF C109C209C 8576-8100F C110C210C 5362-62.2F C112C212C 9991-81F C113C213C 9992-6