Instruction/ maintenance manual of the product 2400 Crown Audio
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Micro-T ech 2400 Amplifier Service Manual 1 MICRO-TECH ® -2400 PO WER AMPLIFIER SER VICE MANU AL K-SVCMT24 7-95 Micro-Tech ® , ODEP ® and Crown ® are registered trademarks of Crown International, Inc. Mailing Address: P.O. Box 1000 Elkhart, IN U.S.
Micro-T ech 2400 Amplifier Service Manual 2 À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERTURES. RIEN DES PARTIES UTILES À L’INTÉRIEUR. DÉBRANCHER LA BORNE AVANT D’OUVRIR LA MODULE EN ARRIÈRE. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS.
Micro-T ech 2400 Amplifier Service Manual 3 Introduction ............................................................. 4 Scope ...................................................................... 4 Warranty ..........................................
Micro-T ech 2400 Amplifier Service Manual 4 Crown Technical Support Group Factory Service Parts Department Mailing Address: PO Box 1000 Elkhart, IN USA 46515-1000 Shipping Address: 57620 C.
Micro-T ech 2400 Amplifier Service Manual 5 Parts Information shipment on a C.O.D. or pre-payment (check or credit card) basis. TERMS Normal terms are pre-paid.
Micro-T ech 2400 Amplifier Service Manual 6 Specifications Unless noted otherwise, all specifications are based on driving an 8 ohm load per channel, both channels driven, the sensitivity switch in the 26dB position, the AC supply is 120V AC at 60Hz. Crown specifications are guaranteed thr ough the warranty period (nor mally 3 years).
Micro-T ech 2400 Amplifier Service Manual 7 V oltage Conversion The 120 V olt 60 Hz version, sold in the United States, is not voltage selectable. It does not have a voltage selection board. This version is to be used only with 120 V olts and only with 60Hz.
Micro-T ech 2400 Amplifier Service Manual 8 Theor y OVERVIEW It should be noted that over time Crown makes im- provements and changes to their products for various reasons.
Micro-T ech 2400 Amplifier Service Manual 9 Theor y amplifies the difference between input and output signals, any difference in the two waveforms will produce a near open loop gain condition which in turn results in high peak output voltage. The output of the Error Amp, called the Error Signal (ES) drives the Voltage Translators.
Micro-T ech 2400 Amplifier Service Manual 10 High Side (HS) The High Side (HS) of the bridge operates much like a conventional bipolar push-pull output configuration. As the input drive voltage becomes more positive, the HS NPN conducts and delivers positive voltage to the load.
Micro-T ech 2400 Amplifier Service Manual 11 respect to each other. This allows the power supply to deliver +Vcc and -Vcc from the same bridge rectifier and filter as a total difference in potential, regardless of their voltages with respect to ground.
Micro-T ech 2400 Amplifier Service Manual 12 Theor y NEGATIVE LOW SIDE OUTPUT PNP STAGE POSITIVE LOW SIDE OUTPUT NPN STAGE NEGATIVE HIGH SIDE OUTPUT PNP STAGE POSITIVE HIGH SIDE OUTPUT NPN STAGE HIGH .
Micro-T ech 2400 Amplifier Service Manual 13 Electrical Checkout Procedures GENERAL INFORMATION The following test procedures are to be used to verify operation of this amplifier. DO NOT connect a load or inject a signal unless directed to do so by the proce- dure.
Micro-T ech 2400 Amplifier Service Manual 14 TEST 6: VOLTAGE GAIN Spec 26dB Gain: Gain of 20.0 ±3%. Spec 0.775V Sensitivity: ±6%. Spec 1.4V Sensitivity: +12%/–6%. Initial Conditions: Controls per standard. Procedure: No load connected. Inject a 0.
Micro-T ech 2400 Amplifier Service Manual 15 Electrical Checkout Procedures Procedure Short: Inject a 60 Hz sine wave at 5 VAC minimum output. After establishing signal, short the output for 10 seconds. TEST 14: ODEP LIMITING Spec: No oscillation on ODEP Limiting wave form; either channel controls limiting in Parallel Mono Mode.
Micro-T ech 2400 Amplifier Service Manual 16 Parts List (Non-Module) SUPPLIMENTAL ITEMS CP N ITEM QTY D 4137-2 Nylon Thumbscrew W asher 4 C 3342-0 Feet, Black Self-Stick 4 A10087-71012 10-32 .
Micro-T ech 2400 Amplifier Service Manual 17 Parts List (Non-Module) OUTPUT ASSEMBL Y CONT . (ONE PER CHANNEL) CPN ITEM QTY(PER CHANNEL) D 7665-9 Clip, TO-3P Mounting 2 D 7666-7 Bracket, TO-3P Heatsin.
Micro-T ech 2400 Amplifier Service Manual 18 Parts List (Non-Module) MAIN CHASSIS ASSEMBLY CP N ITEM QTY D 8501-5 Cover , T op 1 D 8548-6 Cover , Bottom 1 A10110-70605 Screw , 6-32-.312 T aptite Ph (Covers) 16 M21447J3 Main Chassis 1 MISCELLANEOUS CP N ITEM QTY A10110-70812 8-32 x .
Micro-T ech 2400 Amplifier Service Manual 19 Module Information MODULE HISTORY The Micro Tech 2400 amplifier was 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 all modules used up to this date, July 1995.
Micro-T ech 2400 Amplifier Service Manual 20 M46330-3 FUSE MODULE 2 C 5060-6 PC Mount Fuse Clip 11 C 7817-7 T ab, AMP .25 Faston PC Mount 1 P10425-0 MT -2400 Fuse Boar d For replacement fuse see Power Supply Parts List on page 16. Q43327-8 DISPLA Y MODULE CAP ACITORS C503 C603 C 6806-1 .
Micro-T ech 2400 Amplifier Service Manual 21 Q43354-2 Output Module Parts List (P10429-2 Board) Q43354-2 Output Module for MT-2400. For Schematic See J0658-5 CAPACITORS C01 C 8511-5 .047µF C02 C 8426-6 .1µF C03 C 8426-6 .1µF C04 C 6806-1 .01µF C05 C 6806-1 .
Micro-T ech 2400 Amplifier Service Manual 22 Q43328-6 Main Module Parts List (D8679-9 Board) Q43328-6 MT -2400 ORIGINAL MAIN MODULE Use Schematic J 0658-5 CAP ACITORS C1 C 3913-8 470µF C2 C 3913-8 470µF C4 C 6802-0 .47µF C5 C 6806-1 .01µF C6 C 6806-1 .
Micro-T ech 2400 Amplifier Service Manual 23 RESISTOR NETWORKS N101 N201 D 7944-8 Res. Net. N102 N202 D 6082-8 Res. Net. TRANSISTORS Q100 Q200 D 2961-7 2N3859A Q101 Q201 C 3578-9 MPSA93 Q102 Q202 C 38.
Micro-T ech 2400 Amplifier Service Manual 24 R153 R253 A10124-24 JUMPER R154 R254 A10266-5601 56 R155 R255 A10266-1321 1.3K R156 R256 A10266-1321 1.3K R157 R257 A10266-1321 1.
Micro-T ech 2400 Amplifier Service Manual 25 J500 J800 D 8681-5 10 In. RBN J600 J700 D 8680-7 6 In. RBN HW5-8 C 8812-7 5.5" Cbl Tie Z1-Z5 OPEN Q43328-6 Main Module Parts List Cont.
Micro-T ech 2400 Amplifier Service Manual 26 Q43399-7 Main Module Parts List (D8827-4 Board) Q43399-7 MT -2400 MAIN MODULE Use Schematic J 0691-6 CAP ACITORS C1 C 3913-8 470µF C2 C 3913-8 470µF C4 C 6802-0 .47µF C5 C 6806-1 .01µF C6 C 6806-1 .01µF C7 C 8897-8 .
Micro-T ech 2400 Amplifier Service Manual 27 RESISTOR NETWORKS N101 N201 D 7944-8 Res. Net. N102 N202 D 6082-8 Res. Net. TRANSISTORS Q100 Q200 D 2961-7 2N3859A Q101 Q201 C 3578-9 MPSA93 Q102 Q202 C 38.
Micro-T ech 2400 Amplifier Service Manual 28 R149 R249 C 8836-6 100 .5W FP R150 R250 A10266-2721 2.7K R151 R251 A10266-1231 12K R152 R252 A10265-11521 11.5K 1% R153 R253 A10124-24 JUMPER R154 R254 A10266-5601 56 R155 R255 A10266-1321 1.3K R156 R256 A10266-1321 1.
Micro-T ech 2400 Amplifier Service Manual 29 U103A U203A OPEN MISC. Board D 8827-4 Socket C 3450-1 14 Pin HW9-10 C 9494-3 Heatsinks HW11-15 C 9944-7 Nyl. Spacer J1 C 7593-4 5 Pin HDR J2 C 4508-5 16 Pin J11 C 7526-4 3 Pin HDR J12 Not Used J100 J200 C 6777-4 Ph.
An important point after buying a device Crown Audio 2400 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Crown Audio 2400 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Crown Audio 2400 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Crown Audio 2400 you will learn all the available features of the product, as well as information on its operation. The information that you get Crown Audio 2400 will certainly help you make a decision on the purchase.
If you already are a holder of Crown Audio 2400, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Crown Audio 2400.
However, one of the most important roles played by the user manual is to help in solving problems with Crown Audio 2400. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Crown Audio 2400 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
