Sony ICD-BX800 Service Manual ▷ View online
ICD-BX800
2
1. DISASSEMBLY
1-1. Disassembly Flow ........................................................... 3
1-2. Battery Case Lid ............................................................. 3
1-3. Case (Front) Assy, Speaker (SP101) ............................... 4
1-4. Complete Main Board ..................................................... 5
1-5. Liquid Crystal Display Panel (LCD101),Main Board .... 5
1-2. Battery Case Lid ............................................................. 3
1-3. Case (Front) Assy, Speaker (SP101) ............................... 4
1-4. Complete Main Board ..................................................... 5
1-5. Liquid Crystal Display Panel (LCD101),Main Board .... 5
2.
TEST MODE
............................................................ 6
3. DIAGRAMS
3-1. Block
Diagram
................................................................ 11
3-2. Printed Wiring Board -Main Section (1/2)- .................... 13
3-3. Printed Wiring Board -Main Section (2/2)- .................... 14
3-4. Schematic Diagram -Main Section (1/5)- ....................... 15
3-5. Schematic Diagram -Main Section (2/5)- ....................... 16
3-6. Schematic Diagram -Main Section (3/5)- ....................... 17
3-7. Schematic Diagram -Main Section (4/5)- ....................... 18
3-8. Schematic Diagram -Main Section (5/5)- ....................... 19
3-3. Printed Wiring Board -Main Section (2/2)- .................... 14
3-4. Schematic Diagram -Main Section (1/5)- ....................... 15
3-5. Schematic Diagram -Main Section (2/5)- ....................... 16
3-6. Schematic Diagram -Main Section (3/5)- ....................... 17
3-7. Schematic Diagram -Main Section (4/5)- ....................... 18
3-8. Schematic Diagram -Main Section (5/5)- ....................... 19
4.
EXPLODED VIEWS
4-1. Case (Front) Section ....................................................... 27
4-2. Case (Rear) Section ........................................................ 28
4-2. Case (Rear) Section ........................................................ 28
5.
ELECTRICAL PARTS LIST
.............................. 29
Accessories are given in the last of the electrical parts list.
TABLE OF CONTENTS
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
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
• 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.
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
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 fl ow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
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.
also be added to ordinary solder.
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
• Keep the temperature of soldering iron around 270 °C during
• Keep the temperature of soldering iron around 270 °C during
repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
ICD-BX800
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SECTION 1
DISASSEMBLY
• This set can be disassembled in the order shown below.
1-1. DISASSEMBLY FLOW
Note: Follow the disassembly procedure in the numerical order given.
1-2. BATTERY CASE LID
1 claw
2 claw
3 battery case lid
1-2. BATTERY CASE LID
(Page
(Page
3)
1-3. CASE
(FRONT)
ASSY,
SPEAKER
(SP101)
(Page
4)
SET
1-4. COMPLETE MAIN BOARD
(Page
(Page
5)
1-5. LIQUID CRYSTAL DISPLAY PANEL (LCD101),
MAIN
MAIN
BOARD
(Page
5)
ICD-BX800
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1-3. CASE (FRONT) ASSY, SPEAKER (SP101)
2 two screws
7 two screws
8 bracket (speaker)
9 bracket (speaker)
red
black
0 Remove the two solders.
qa speaker (SP101)
3 two claws
4 two claws
5 two claws
6 case (front) assy
case (front) assy
1 tapping screw
ICD-BX800
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1-4. COMPLETE MAIN BOARD
1-5. LIQUID CRYSTAL DISPLAY PANEL (LCD101), MAIN BOARD
1 screw
2
Remove the two solders.
case (rear) assy
3
COMPLETE MAIN board
1
Remove the two solders.
6
liquid crystal display panel
(LCD101)
7
MAIN board
3
holder (LCD)
4
spacer (LCD)
5
connection conductive board
2
electret condenser microphone
(MIC101)
(MIC101)
red
black