Page 1
RDA-7.1 3 7 63 1515 0 Ref. No. 3804 SERVICE MANUAL SERVICE MANUAL Nov, 2004 SEVEN CHANNEL AMPLIFIER RDA-7.1 MODEL 120 V AC, 60Hz L 13942296513 230-240 V AC, 50Hz 230-240 V AC, 50Hz 220-230 V AC, 50/60Hz 220-230 V AC, 50/60Hz...
RDA-7.1 3 7 63 1515 0 SPECIFICATIONS AMPLIFIER SECTION Number of channels : Power : 150 watts per channel min. RMS at 8 ohms, 2 channels driven from 20 Hz to 20 kHz with no more than 0.1 % total harmonic distortion (FTC).
Page 3
RDA-7.1 3 7 63 1515 0 SERVICE PROCEDURE-1 PRIMARY CONNECTIONS FOR DIFFERENT VOLTAGES AC Board Jumpers For voltages in the 100V - 120V range, install the two jumpers marked L. For voltages in the 200V - 240V range, install the single jumper marked H.
RDA-7.1 3 7 63 1515 0 ADJUSTMENT PROCEDURE-1 BIAS & DC Offset Adjustment Connect the assembled channel to the power transformer. Connect the power cord into an AC wall outlet. Turn ON the unit. After about 3 seconds the two green LED's should turn ON.
Page 23
RDA-7.1 3 7 63 1515 0 ADJUSTMENT PROCEDURE-2 Final Assembly Check Check the screw which is the fixation of AMPLIFIER MODULE when the electric conductivity between 1 and 2 is ruined. L 13942296513 FUSE AC INLET 12V TRIGGER Rear panel u163 http://www.xiaoyu163.com...
Page 24
1/4 PAGE 3 7 63 1515 0 RDA-7.1 <Note> Parts marked by " NSP" are generally unavailable because they are not in our Master Spare Parts List. NOTE : THE COMPONENTS IDENTIFIED BY THE MARK ARE CRITICAL FOR RISK OF FIRE AND <ADD>...
Page 25
EXPLODED UN02 AC BOARD (RDA-7-020-B) 70-ONK-0002 EXPLODED UN03 (RDA-7-030-A) INRUSH CURRENT LIMITER BOARD EXPLODED RDA-7.1 PRINTED CIRCUIT BOARD PARTS LIST UN01 AMPLIFIER PC BOARD (RDA-7-010-F) CIRCUIT NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARKS LP2951CN (Voltage Regulator) 48-0097 PCB01...
Page 26
SWITCHING 1N4150 48-0025 PCB02 SEL2E10C (BLUE) 225374 PCB02 FUSE LITTLE FUSE R251 001 F826-ND 43-0043 PCB02 TRANSFORMER MICROTRAN MT3101 56-0168 PCB02 RELAY 821-W-1A-C 12V DC 51-0009 PCB02 RELAY 821-W-1A-C 12V DC 51-0009 PCB02 RDA-7.1 PACKING PROCEDURE PARTS LIST u163 http://www.xiaoyu163.com...
Page 27
4/4 PAGE 3 7 63 1515 0 REF. NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARKS INNER CARTON RDA-7.1 34-ONK-0001 PACKING L & R 34-ONK-0003 PACKING POLY BAG 34-0010 PACKING WARNING LABEL PACKING LABEL (PE-LD) 29361573 PACKING TAPE (SEROHAN) NITTO NO.29...
Page 28
RDA-7.1 3 7 63 1515 0 PACKING PROCEDURE-1 INNER CARTON FRONT SIDE Inner carton L 13942296513 Inner carton u163 http://www.xiaoyu163.com...