Rotel RKB-250 Technical Manual Download Page 2

AC BREAKER

SPEAKERS

RIGHT

LEFT

INPUT

RIGHT

LEFT

SIGNAL OUTPUT

LINK

RIGHT

12V TRIG

OFF

SIGNAL SENSE

LEFT

IN

OUT

POWER AMPLIFIER

MODEL NO. RKB-250

POWER CONSUMPTION: 190 W

WARNING

SHOCK HAZARD—DO NOT OPEN.

AVIS: RISQUE DE CHOC ÉLECTRIQUE—NE PAS OUVRIR.

4 OHMS MINIMUM

WARNING: 

TO REDUCE THE RISK OF FIRE OR ELECTRICAL

SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE

PROTECTION

LEVEL

 POWER AMPLIFIER  RKB-250

R

L

POWER

Appearance

RKB-250

10A

FAN Guard

Label

FAN Motor

Connector Plug

Socket

4x Screws

Installation of FAN KIT for RKB Amplifiers

Installation of FAN KIT for RKB Amplifiers

Installation of FAN KIT for RKB Amplifiers

Installation of FAN KIT for RKB Amplifiers

1.  Locate and remove the metal plate on the rear panel using

a Philips head screw driver.

    
2.  Insert the four long screws supplied with the fan kit through the

Fan guard and into the fan. Notice the arrow on the top of fan 
should point away from the rear panel and that the label on the 
fan should be visible through the fan guard. Air is drawn through
the amplifier by the fan and expelled out through the fan guard.

 
3.  Insert the plug attached to the fan into the socket marked

"OPTION RKBF-1 ONLY" the plug will only fit one-way.

 
4. Now tighten the four Philips head screws holding the fan and the

unit is complete. The fan will only run when the inside temperature
of the amplifier reaches 70C, it will not run all the time.

 2

Summary of Contents for RKB-250

Page 1: ...Hz 8 ohms 2 Continuous rated power 0 03 One half rated power 0 03 1 watt power 0 03 Intermodulation Distortion 60 Hz 7 kHz 4 1 0 03 Danping Factor 20 20 000 Hz 8 ohms 200 Input Impedance 20 k Ohms Inp...

Page 2: ...on of FAN KIT for RKB Amplifiers Installation of FAN KIT for RKB Amplifiers 1 Locate and remove the metal plate on the rear panel using a Philips head screw driver 2 Insert the four long screws suppli...

Page 3: ...ELECTROLYTIC CAPACITOR 50V470uF C913 914 041 TUTES1H4R7 7TF ELECTROLYTIC CAPACITOR 50V4 7uF C707 971 041 TUTES1J221 7TS ELECTROLYTIC CAPACITOR 63V220uF C951 952 041 TUTES1V221 7TF ELECTROLYTIC CAPACIT...

Page 4: ...TMF16 2203 METAL FILM RESISTOR 1 6W 220K R707 711 754 054 TMF16 4702 METAL FILM RESISTOR 1 6W 47K R712 054 TMF16 5603 METAL FILM RESISTOR 1 6W 560K S001 061 C 4176A08 POWER SWITCH PS3 22SPA P7AZ TV 8...

Page 5: ...NEL 022 T 1051U02 POWER TRANSFORMER 034 LTL1214A LED 2F RED 034 SEL1E24W LED 1X5 BLU 069 C 4629A01 AC 2P INLET 6102 3100 WIRING 072 C 4621A03 AC CORD SET SJT AWG16 UL 2P for USA 072 C 4622A02 AC CORD...

Page 6: ...ansistor and Heat Sink Set input off Adjustment Step TP1 TP2 X 1426 01 PCB VR603 VR604 X 1426 01 PCB 1 2 Coupling Location Adjust for Adjust DC milli voltmeter reads 4mV RKB 250 Case Outlines 2SA608K...

Page 7: ...N8 1 2 JP1 JP6A K701 2 3 4 1 D707 E1 E2 K904 1 2 K702 1 3 4 2 1 3 4 2 K901 K902 TH601 TP1 JP5A VR603 JP3A JP4A K903 VR604 JP1B JP2B JP3B JP6B TP2 TH602 AC 120V TYPE 501 X 1426 03 JP1A JP2A JP4B AC Sec...

Page 8: ...Memo 8...

Page 9: ...016 X 1426A01 04 016 E 1434A00 PCB Assembly RKB 250 9...

Page 10: ...Schematic Diagram RKB 250 10...

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