Rotel RKB-250 Technical Manual Download Page 6

Page: 6 / 10

Instruments : DC milli–voltmeter
Notes : Prior to Bias Adjustment, run about 5minutes with rated output(8ohms) and

warm up Power Transistor and Heat Sink. Set input off.

Adjustment

Step

TP1

TP2

X-1426-01 PCB

VR603

VR604

X-1426-01 PCB

Coupling

Location

Adjust for

Adjust

DC milli–voltmeter reads 4mV

RKB-250

Case Outlines

2SA608K
2SA1016K
2SA1376A
2SC536K
2SC2362K
2SC3478A

2SB631K
2SD1953
2SD600K

2SA1837
2SC4793

2SB817
2SD1047

PC817B

NJM555D

MPC1237HA

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...