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UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
TABLE OF CONTENTS
1-1. Cord Dressing (Power Cord) ............................................... 5
1-2. Pointer Alignment ............................................................... 5
............................................................................ 6
3-1. Cabinet (Upper) Assy .......................................................... 8
3-2. Front Panel Assy ................................................................. 8
3-3. Power Board ........................................................................ 9
3-4. Main Board Section ............................................................ 9
3-5. Main Board, CD Block Assy ............................................. 10
3-6. CD Mechanism Deck ........................................................ 10
3-7. CD Board .......................................................................... 11
3-8. Optical Pick-up ................................................................. 11
3-9. Lid (CD) ............................................................................ 12
3-10. LED Holder Assy .............................................................. 12
3-11. LED Indicator Element Unit ............................................. 13
3-12. Indicator Board, Drive Board ............................................ 13
Tuner Section ......................................................................... 14
CD Section ............................................................................ 15
5-1. Block Diagram - CD Section - ......................................... 17
5-2. Block Diagram - Main Section - ...................................... 18
5-3. Circuit Boards Location .................................................... 19
5-4. Printed Wiring Board - CD Section - ............................... 20
5-5. Schematic Diagram - CD Section - .................................. 21
5-6. Printed Wiring Boards - Main Section - .......................... 22
5-7. Schematic Diagram - Main Section - ............................... 23
5-8. Printed Wiring Boards - Display Section - ...................... 24
5-9. Printed Wiring Board - Key Section - .............................. 25
5-10. Schematic Diagram - Display Section - ........................... 26
5-11. Printed Wiring Board - Power Supply Section - .............. 27
5-12. Schematic Diagram - Power Supply Section - ................. 28
6-1. Cabinet Section ................................................................. 32
6-2. Front Panel Section ........................................................... 33
6-3. Upper Cabinet Section ...................................................... 34
6-4. Lower Cabinet Section ...................................................... 35
6-5. CD Block Section .............................................................. 36
6-6. CD Mechanism Section .................................................... 37
ICF-CD837
......................................... 38
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