Read Sony SRF-MQ11 Service Manual online
2
SRF-MQ11
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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.)
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
• 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!
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.
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.
also be added to ordinary solder.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED LINE WITH
MARK
0
ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
TABLE OF CONTENTS
1. GENERAL
·········································································· 3
2. DISASSEMBLY
2-1. Cabinet (Rear) Assy (R) ·················································· 4
2-2. MAIN Board ··································································· 5
2-3. MICROCOMPUTER Board ··········································· 5
2-4. Hanger (R) Section ························································· 6
2-5. Speaker (R) ····································································· 7
2-6. Cabinet (Rear) Assy (L) ·················································· 7
2-7. Hanger (L) Section ·························································· 8
2-8. BATTERY Board ···························································· 9
2-9. Speaker (L) ····································································· 9
2-2. MAIN Board ··································································· 5
2-3. MICROCOMPUTER Board ··········································· 5
2-4. Hanger (R) Section ························································· 6
2-5. Speaker (R) ····································································· 7
2-6. Cabinet (Rear) Assy (L) ·················································· 7
2-7. Hanger (L) Section ·························································· 8
2-8. BATTERY Board ···························································· 9
2-9. Speaker (L) ····································································· 9
3. ADJUSTMENTS
···························································· 10
4. DIAGRAMS
4-1. Block Diagram ······························································ 12
4-2. Printed Wiring Board – MAIN Board – ······················· 13
4-3. Schematic Diagram – MAIN Board – ························· 14
4-4. Printed Wiring Board
– MICROCOMPUTER Board – ·································· 15
4-5. Schematic Diagram
– MICROCOMPUTER Board – ·································· 16
4-6. Printed Wiring Board – BATTERY Board – ················ 17
4-7. Schematic Diagram – BATTERY Board – ·················· 18
4-8. IC Pin Function Description ········································· 20
4-2. Printed Wiring Board – MAIN Board – ······················· 13
4-3. Schematic Diagram – MAIN Board – ························· 14
4-4. Printed Wiring Board
– MICROCOMPUTER Board – ·································· 15
4-5. Schematic Diagram
– MICROCOMPUTER Board – ·································· 16
4-6. Printed Wiring Board – BATTERY Board – ················ 17
4-7. Schematic Diagram – BATTERY Board – ·················· 18
4-8. IC Pin Function Description ········································· 20
5. EXPLODED VIEWS
······················································ 21
6. ELECTRICAL PARTS LIST
······································· 22
• Use the Sony AC power adaptor (supplied) only. The polarity of the plugs of
other manufacturers may be different. Failure to use the recommended AC
power adaptor may cause the unit to malfunction.
power adaptor may cause the unit to malfunction.
Polarity of the plug
For the customers in the U.S.A.
RECYCLING NICKEL METAL HYDRIDE BATTERIES
Nickel Metal Hydride batteries are
recyclable.
You can help preserve our environment by returning
your used rechargeable batteries to the collection
and recycling location nearest you.
recyclable.
You can help preserve our environment by returning
your used rechargeable batteries to the collection
and recycling location nearest you.
For more information regarding recycling of
rechargeable batteries, call toll free
1-800-822-8837, or visit http://www.rbrc.org/
rechargeable batteries, call toll free
1-800-822-8837, or visit http://www.rbrc.org/
Caution: Do not handle damaged or leaking
Nickel Metal Hydride batteries.
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