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GFA-7605 SERVICE PARTS LIST 

AMPLIFIER MODULE PCB 

 

 

 

 

 

 

SCHEMATIC ADCOM 

PART 

NUMBER DESCRIPTION 

 

LOCATION  

 

 

BR2  

BRIDGE 

RECTIFIER  SBU8G 

C01 

 

CAPACITOR POLY FILM 

2.2uF 100V 

C02 

 

CAPACITOR POLY FILM 

330pF 100V 

C03 

 

CAPACITOR ELEC 

100uF 63V 

C04 

 

CAPACITOR MYLAR FILM 

1uF 100V 

C05 

 

CAPACITOR SILVER MICA 

33pF 100V 

C06 

 

CAPACITOR POLY FILM 

4.7nF 100V 

C07 

 

CAPACITOR ELEC 

10uF 25V 

C08 

 

CAPACITOR ELEC 

100uF 100V 

C09 

 

CAPACITOR ELEC 

100uF 100V 

C10 

 

CAPACITOR POLY 

270pF 100V 

C11 

 

CAPACITOR POLY 

270pF 100V 

C12 

 

CAPACITOR ELEC 

100uF 10V 

C13  

CAPACITOR 

MYLAR 0.1uF 

250V 

C15 

 

CAPACITOR ELEC 

10uF 25V 

C16 

 

CAPACITOR POLY 

0.01uF 100V 

C17 

 

CAPACITOR ELEC 

22uF 35V 

C18 

 

CAPACITOR ELEC 

10000uF 63WV 

C19 

 

CAPACITOR ELEC 

10000uF 63WV 

C20  

CAPACITOR 

MYLAR 0.22uF 

C21  

CAPACITOR 

MYLAR 0.22uF 

C22 

 

CAPACITOR ELEC 

100uF 16V 

C23 

 

CAPACITOR ELEC 

220uF 25V 

D02-D05  

DIODE 

1N4148 

D08,D09  

DIODE 

1N4007 

D10-D13  

DIODE 

1N4148 

F3  

FUSE 

T6.3A 

F4  

FUSE 

T6.3A 

J1 

 

RCA INPUT JACK 

 

LED1 

 

DISTORTION LED 

LTL1254 (YELLOW)

LED2 

 

PROTECT LED 

LTL1204 (RED) 

Q01  

TRANSISTOR 

2SC3381 

Q02  

TRANSISTOR 

MPSA92 

Q03  

TRANSISTOR 

MPSA42 

Q04  

TRANSISTOR 

MPSA92 

Q05  

TRANSISTOR 

MPSA92 

Q06  

TRANSISTOR 

MPSA92 

Q07  

TRANSISTOR 

2SA1380 

Q08  

TRANSISTOR 

2SC3502F 

Q09  

TRANSISTOR 

2SC1567 

Q10  

TRANSISTOR 

2SC4793 

Q11  

TRANSISTOR 

2SA1837 

Q12  

TRANSISTOR 

2SC3281 

Q13  

TRANSISTOR 

2SA1302 

Q14  

TRANSISTOR 

2SC3281 

Q15  

TRANSISTOR 

2SA1302 

Q16  

TRANSISTOR 

MPSA42 

Q17  

TRANSISTOR 

MPSA42 

Q18  

TRANSISTOR 

MPSA42 

 

 

 

 

Содержание GFA-7605

Страница 1: ...TABLE OF CONTENTS Introduction 1 Test Procedures 1 Parts List 2 Voltage Conversion 5 Specifications 7 PCB Layouts 8 Schematic 9 8551 East Anderson Drive Suite 105 Scottsdale Arizona 85255 USA Tel 480...

Страница 2: ...LONGEVITY OF THE AMPLIFIER BIAS ALIGNMENT The component references are the same for all channels Operate the amplifier without load or input connection for this adjustment 1 Turn the amplifier on and...

Страница 3: ...F 100V C17 CAPACITOR ELEC 22uF 35V C18 CAPACITOR ELEC 10000uF 63WV C19 CAPACITOR ELEC 10000uF 63WV C20 CAPACITOR MYLAR 0 22uF C21 CAPACITOR MYLAR 0 22uF C22 CAPACITOR ELEC 100uF 16V C23 CAPACITOR ELEC...

Страница 4: ...8 RESISTOR 100 R19 RESISTOR 475 R20 RESISTOR 37 4 R21 RESISTOR 37 4 R22 RESISTOR 75 R23 RESISTOR 2 74K R24 RESISTOR 1K R26 RESISTOR 392 R27 RESISTOR 392 R28 RESISTOR 10 R29 RESISTOR 49 9 R30 RESISTOR...

Страница 5: ...N RELAY LED1 POWER LED LTL1204 RED Q1 TRANSISTOR MPSA13 R1 RESISTOR 1K 1W R2 RESISTOR 3 32K R3 RESISTOR 10K R4 RESISTOR 3 32K T1 STANDBY TRANSFORMER TH1 THERMISTOR CL100 U2 REGULATOR IC 7812 POWER SWI...

Страница 6: ...tch is different in both versions In the multivoltage unit this connecting block has 5 pair of mounting leads as is shown in the figures below In the 120VAC only version the connecting block has only...

Страница 7: ...shown in figure 2 4 Add heavy gauge wire between screw down portion of terminals as shown 4 Change the rear panel AC fuse from 6A to 12A AGC Place a sticker on the rear panel at the fuse holder to sho...

Страница 8: ...1kHz 0 0012 10kHz 0 02 20kHz 0 025 THD Noise at 150 watts into 4 ohms Typical 20Hz 0 025 1kHz 0 025 10kHz 0 035 20kHz 0 045 Frequency Response 1 Watt into 8 ohms 10Hz to 20kHz 0 0 25dB Power Bandwidth...

Страница 9: ...8...

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