Jvc AX 5 Service Manual
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Extracted text from Jvc AX 5 Service Manual (Ocr-read)
Page 1
MODEL
A-X5
STEREO INTEGRATED AMPLIFIER
N0 2 479
mu 1979
Page 2
Contents
Page
1. Features ..................................................................... 1
2. Specifications ................................................................. 2
3. Removal of Top Cover and Bottom Plate ............................................... 3
4. Main Parts Location and Part Numbers ................................................. 4
5. Exploded Views and Part Numbers ................................................... 5
6. Replacement of the Power Transistors ................................................. 6
7. Block Diagram ................................................................. 6
8. Technical Description
8-(1) Super A Power Amplifier ................................................. 7
8-(2) Voltage Amplifier Stage Utilizing "Super-A" Performance to the Utmost ................. 7
8-(3) Super A Type Power Amplifier Circuit ........................................ 8
8-(4) DC Servo Type Equalization Circuit Using EL FET ................................ 8
9. Adjustment Procedures
9-(1) Power Amplifier Center Voltage Adjustment .................................... 9
9-(2) Idling Current Adjustment ............................................... . 9
10. Printed Circuit Board Ass'y and Parts List
10-(1) TXX~199 B 8: C Equalizer Amp. & Switch P.C.B. Ass'y ....... 10
10-l2) TXX-200 B.C. & D Driver Amp. & Power Supply P.C.B. Assy . . . . . 12
10-(3) TPS-280 B.C.D. & E Power Amp. & Protector P.C.B. Ass'y .......................... . 15
10-(4) TPS-214E Fuse & AC Outlet P.C.B. Assy .................................. . . . 17
10-(5) TPS-194A AC Outlet & Voltage Selector P.C.B. Ass'y .......................... . . . 13
10-(6) TPS-197A & BBS Line Voltage Selector P.C.B. Assy ........................... . . . 18
11. Packing Materials and Part Numbers ................................................ . 19
12. Accessories List ............................................................. . 19
13. Parts List with Specified Numbers for Designated Areas .................................... . 20
14, A-X5 Schematic Diagram ..................................................... . 21-22
Warning:
When replacing the parts maked with A , be sure to use the designated parts to ensure safety.
1 . Features
0 Super A power amplifier
Class A 70 W + 70 W (20 H2 - 20 kHz, 0.005 %, 8 9 both channels)
0 DC servo equalization amplifier for both MC and MM cartridges
0 2 amplifier configuration throughout from the phono input to output
0 Direct power supply system with emphasis on power
0 Extra high operability thanks to the non-clearance volume knobs employed
A-X5
_ 1 _ No. 2479