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1、D&M Holdings Inc. SERVICE MANUAL e e MODELJPE3E2EKEAE1E1KE1C AVR-1611 s ? AVR-1621 s ? AVR-591? AV SURROUND RECEIVER Ver. 3 Some illustrations using in this service manual are slightly different from the actual set. Please use this service manual with referring to the operating instructions without
2、fail. For purposes of improvement, specifi cations and design are subject to change without notice. s Please refer to the MODIFICATION NOTICE. RadioFans.CN 2 SAFETY PRECAUTIONS The following check should be performed for the continued protection of the customer and service technician. LEAKAGE CURREN
3、T CHECK Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. if the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 460 kohms, the unit is def
4、ective. Be sure to test for leakage current with the AC plug in both polarities, in addition, in each power ON, OFF and STANDBY mode, if applicable. CAUTION Please heed the points listed below during servicing and inspection. Heed the cautions! Spots requiring particular attention when servicing, su
5、ch as the cabinet, parts, chassis,etc., have cautions indicated on labels. be sure to heed these causions and the cautions indicated in the handling instructions. Caution concerning electric shock! (1) An AC voltage is impressed on this set, so touching internal metal parts when the set is energized
6、 could cause electric shock. Take care to avoid electric shock, by for example using an isolating transformer and gloves when servicing while the set is energized, unplugging the power cord when replacing parts, etc. (2) Tere are high voltage parts inside. Handle with extra care when the set is ener
7、gized. Caution concerning disassembly and assembly! Through great care is taken when manufacturing parts from sheet metal, there may in some rare cases be burrs on the edges of parts which could cause injury if fi ngers are moved across them. Use gloves to protect your hands. Only use designated par
8、ts! The sets parts have specific safety properties (fire resistance, voltage resistance, etc.). For replacement parts, be sure to use parts which have the same poroperties. In particular, for the important safety parts that are marked z on wiring diagrams and parts lists, be sure to use the designat
9、ed parts. Be sure to mount parts and arrange the wires as they were originally! For safety seasons, some parts use tape, tubes or other insulating materials, and some parts are mounted away from the surface of printed circuit boards. Care is also taken with the positions of the wores omsode amd clam
10、ps are used to keep wires away from heating and high voltage parts, so be sure to set everything back as it was originally. Inspect for safety after servicing! Check that all screws, parts and wires removed or disconnected for servicing have been put back in their original positions, inspect that no
11、 parts around the area that has been serviced have been negatively affected, conduct an inslation check on the external metal connectors and between the blades of the power plug, and otherwise check that safety is ensured. (Insulation check procedure) Unplug the power cord from the power outlet, dis
12、connect the antenna, plugs, etc., and turn the power switch on. Using a 500V insulation resistance tester, check that the inplug and the externally exposed metal parts (antenna terminal, headphones terminal, input terminal, etc.) is 1M or greater. If it is less, the set must be inspected and repaire
13、d. Many of the electric and structural parts used in the set have special safety properties. In most cases these properties are difficult to distinguish by sight, and using replacement parts with higher ratings (rated power and withstand voltage) does not necessarily guarantee that safety performanc
14、e will be poreserved. Parts with safety properties are indicated as shown below on the wiring diagrams and parts lists is this service manual. Be sure to replace them with parts with the designated part number. (1) Schematic diagrams .Indicated by the z mark. (2) Parts lists .Indicated by the z mark
15、. Using parts other than the designated parts could result in electric shock, fi res or other dangerous situations. CAUTION Concerning important safety parts RadioFans.CN 3 NOTE FOR SCHEMATIC DIAGRAM WARNING: Parts marked with this symbol z have critical characteristics. Use ONLY replacement parts r
16、ecommended by the manufacturer. CAUTION: Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is les
17、s than 460 kohms, the unit is defective. WARNING: DO NOT return the unit to the customer until the problem is located and corrected. NOTICE: ALL RESISTANCE VALUES IN OHM. k=1,000 OHM / M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASURED AT
18、 NO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE. Parts for which nsp is indicated on this table cannot be supplied. When ordering of part, clearly indicate 1 and I (i) to avoid mis-supplying. Ordering part without stating its part number can not be supplied.
19、Not including General-purpose Carbon Chip Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.) Parts marked with this symbol z have critical characteristics. Use ONLY replacement parts recommended by the manufacturer. Not including General-purpose Carbon Film Resis
20、tor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.) Part indicated with the mark is not illustrated in the exploded view. WARNING: 1. 2. 3. 4. 5. 6. Resistors RD:Carbon RC:Composition RS :Metal oxide film RW:winding RN:Metal film RK :Metal mixture P:Pulse-resistant typ
21、e NL :Low noise type NB :Non-burning type FR :Fuse-resistor F:Lead wire forming 2B :1/8 W 2E :1/4 W 2H :1/2 W 3A :1 W 3D :2 W 3F :3 W 3H :5 W F:1% G:2% J:5% K:10% M :20% Ex.:RN Type 14K Shape and per- formance 2E Power 182 Resist- ance G Allowable error FR Others * Resistance 1800ohm=1.8kohm1 82 Ind
22、icates number of zeros after effective number. 2-digit effective number. 1.2ohm1 R2 2-digit effective number, decimal point indicated by R. 1-digit effective number. : Units: ohm Capacitors CE :Aluminum foil electrolytic CA :Aluminium solid electrolytic CS :Tantalum electrolytic CQ:Film CK :Ceramic
23、CC:Ceramic CP :Oil CM:Mica CF :Metallized CH:Metallized HS :High stability type BP :Non-polar type HR:Ripple-resistant type DL :For change and discharge HF :For assuring high requency U:UL part C:CSA part W :UL-CSA part F:Lead wire forming 0J :6.3 V 1A :10 V 1C :16 V 1E :25 V 1V :35 V 1H :50 V 2A :1
24、00 V 2B :125 V 2C :160 V 2D :200 V 2E :250 V 2H :500 V 2J :630 V F:1% G:2% J:5% K:10% M :20% Z:80% :- 20% P:+100% C:0.25pF D:0.5pF =:Others Ex.:CE Type 04W Shape and per- formance 1H Dielectric strength 3R2 Capacity M Allowable error BP Others Units:F. 2200F2 22 Indicates number of zeros after effec
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