Page 1
2
ICD-BP220
TABLE OF CONTENTS
1. GENERAL·································································· 3
2. DISASSEMBLY
2-1. Sub Block Assy, Upper Lid ············································· 4
2-2. F-SW Board ···································································· 4
2-3. Main Board, P-SW Board ··············································· 5
2-4. PC Board ········································································· 5
3. DIAGRAMS
3-1. Block Diagram ································································ 7
3-2. Printed Wiring Board -“ Main Section (1/2) -“ ················· 8
3-3. Printed Wiring Board -“ Main Section (2/2) -“ ················· 9
3-4. Schematic Diagram -“ Main Section (1/3) -“ ·················· 10
3-5. Schematic Diagram -“ Main Section (2/3) -“ ·················· 11
3-6. Schematic Diagram -“ Main Section (3/3) -“ ·················· 12
3-7. Schematic Diagram -“ F-SW Section -“ ························· 13
3-8. Printed Wiring Board -“ F-SW Section (1/2) -“ ·············· 14
3-9. Printed Wiring Board -“ F-SW Section (2/2) -“ ·············· 15
3-10. Printed Wiring Board -“ PC Section -“ ························· 16
3-11. Schematic Diagram -“ PC Section -“ ···························· 17
3-12. Printed Wiring Board -“ P-SW Section -“ ···················· 18
3-13. Schematic Diagram -“ P-SW Section -“ ······················· 19
3-14. IC Block Diagrams ····················································· 20
3-15. IC Pin Function Description ······································· 21
4. EXPLODED VIEWS
4-1. Upper Lid Assy Section ················································ 23
4-2. Main Board Section ······················································ 24
5. ELECTRICAL PARTS LIST·································· 25
Flexible Circuit Board Repairing
- Keep the temperature of the 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.
Notes on chip component replacement
- Never reuse a disconnected chip component.
- Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
*Replacement of IC109 used in this set requires a special tool.
-The voltage and waveform of CSP (chip size package) cannot be
measured, because its lead layout is different from that of conven-
tional IC.
-Lead layouts
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.
surface
Lead layout of
conventional ICCSP (chip size package)
Page 2
3
ICD-BP220
SECTION 1
GENERAL
This section is extracted from
instruction manual.
1MIC (built-in microphone)
(12)
2Display window (64)
3FOLDER button (12, 16)
4INDEX/BOOKMARK
button (22, 26)
5DISPLAY button (39)
6A-B REPEAT/PRIORITY
button (23, 30)
7MENU button (10, 32, 35, 40,
41)
8ERASE button (20)
9xSTOP button (13, 17)
q;Speaker
qaMIC (PLUG IN POWER)
jack (15)
qsEAR (earphone) jack (14, 17)
qdOPR (operation) indicator
(12, 17)qfzREC (record) /STOP
button (13, 24)
qgX PAUSE button (13, 17)
qh.REVIEW/>CUE (fast
backward, review/fast
forward, cue-selection of
menu mode) button (10, 16,
18, 19, 22, 26, 30, 32, 35, 40,
41)
qjNxPLAY/STOP
-EXECUTE (play/
stop-enter) button (10, 17,
18, 29, 30, 32, 35, 40, 41)
qkHOLD switch (38)
qlVOL (volume) control (17)
w;USB connector for
connecting to a computer
(48)
qa
qs
qd
qf
qg
qh
qj
qk
ql
w;
q; 9
8
7
6
5
4
3
2
1 Main unitRear
wh wg wf
wa
ws
wd
waPLAY SPEED selector (18)
wsMIC SENS (microphone
sensitivity) selector (14)
wdVOR selector (15)
wfClip*
wgBattery compartment (8)
whHook for handstrap (not
supplied)
