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SECTION 4
8 9 2
Standard measuring conditions
4 9 8 2 9 9
4.1
Adjustment method
Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Electric voltmeter
(3) Digital tester
(4) Tracking offset meter
(5) Test Disc JVC :CTS-1000
(6) Extension cable for check
EXTSH002-22P × 1
Standard volume position
Balance and Bass &Treble volume : lndication"0"
Loudness : OFF
Power supply voltage
Load impedance
Output Level
Dummy load
DC14.4V(11 to 16V)
20K Ω (2 Speakers connection)
Line out 2.5V (Vol. MAX)
Exclusive dummy load should be used for AM,and FM. For FM dummy load,there is a loss of 6dB between SSG output and antenna input.The loss of 6dB need not be considered since direct reading of figures are applied in this working standard.
How to connect the extension cable for adjusting
Caution:
Be sure to attach the heat sink and rear bracket onto the power amplifier IC and regulator IC respectively, before supply the power.
If voltage is applied without attaching these parts, the power amplifier IC and regulator IC will be destroyed by heat.
TEL 13942296513 Q Q 3 7 6 3 1 5 1 5 0 8 9 2 4 9 8 2 9 9
Heat sink
Extension cable
EXTSH002-22P
Rear bracket www. xiaoyu163. com
1-26 (No.MA139) http://www.xiaoyu163.com
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Table of contents
- 3 SECTION 1 PRECAUTIONS
- 3 1.1 Safety Precautions
- 4 1.2 Preventing static electricity
- 4 1.3 Handling the traverse unit (optical pickup)
- 4 1.4 Attention when traverse unit is decomposed
- 5 1.5 Important for laser products
- 6 SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
- 7 SECTION 3 DISASSEMBLY
- 7 3.1 Main body
- 11 3.2 CD Mechanism Assembly
- 26 SECTION 4 ADJUSTMENT
- 26 4.1 Adjustment method
- 27 SECTION 5 TROUBLESHOOTING
- 27 5.1 Feed section
- 27 5.2 Focus section
- 27 5.3 Spindle section
- 27 5.4 Tracking section
- 28 5.5 Signal processing section
- 29 5.6 Maintenance of laser pickup
- 29 5.7 Replacement of laser pickup
- 30 5.8 16 PIN CORD DIAGRAM
- 33 Topcover
- 35 Block diagram
- 36 Standard schematic diagrams
- 39 Printed circuit boards
- 42 Backcover
- 43 Cover
- 44 Exploded view of general assembly and parts list
- 46 General Assembly
- 47 CD mechanism assembly and parts list
- 48 CD mechanism
- 49 Electrical parts list
- 49 Main board
- 53 Switch board
- 54 Packing materials and accessories parts list
- 55 Packing and Accessories