Sony ICD-47 Service manual

ICD-47
SERVICE MANUAL
Ver 1.0 2001.04
SPECIFICATIONS
Recording media Built-in flash memory, Monaural recording Recording time 90 minutes Frequency response 280 Hz - 2 800 Hz Speaker approx. 3.6 cm (1 Power output 80 mW Output Earphone jack (mini jack) for 8 - 300 earphone Playback speed control FAST: +50%
SLOW: –25% Power requirements One LR03 (size AAA) alkaline battery: 1.5 V DC Dimensions (w/h/d) (not incl. projecting parts and controls)
58.0 × 83.5 × 14.2 mm (2
Mass (incl. battery) 56 g (1.98 oz)
Design and specifications are subject to change without notice.
7
⁄16 in.) dia.
3
3
9
8
× 3
8
×
⁄16 in.)
US Model
Canadian Model
AEP Model
UK Model
E Model
Features
90 minutes recording time
This unit is useful for recording messages or appointments.
Organizing message files
You can choose among 3 different files to record and store your messages. You can easily move messages from one file to another (see page 18). Up to 99 messages can be recorded in each file.
Alarm function
You can start playing back a desired message with an alarm on a desired date and time (see page 21). You can use this function to remind you of the time of the meeting, etc.
Playback speed control
Adding a recording to previously recorded message
9-873-119-11 Sony Corporation
2001D0500-1 Personal Audio Company C 2001.4 Shinagawa Tec Service Manual Production Group
You can play back messages rapidly (+50%) or slowly (–25%) (see page
19). This is useful when playing back a long recording. The sound pitch will be automatically adjusted when you change the playback speed.
You can add a recording to the message being played back to count as one message (see page 20).
IC RECORDER
ICD-47
SECTION 1

SERVICING NOTES

TABLE OF CONTENTS

1. SERVICING NOTES............................................... 2
2. GENERAL ................................................................... 3
3. DISASSEMBLY
Disassembly Flow ........................................................... 4
Lid, Battery Case ............................................................ 4
“Case (Front) Section”, “Case (Rear) Section” ............. 4
MAIN Board ................................................................... 5
Installation “MAIN Board”,
“Microphone, Electric Condenser” (MIC101) ............... 5
4. TEST MODE .............................................................. 6
5. DIAGRAMS
5-1. Block Diagram ................................................................ 7
5-2. Printed Wiring Board ...................................................... 8
5-3. Schematic Diagram ......................................................... 9
5-4. IC Pin Function Description ........................................... 12
6. EXPLODED VIEW................................................... 15
7. ELECTRICAL PARTS LIST ............................... 16
CAUTION ON REPLACING FLASH MEMORY
The BAD-BLOCK check* must be executed, when the flash memory (IC702) in this set was replaced. The set will not operation normally, unless this check is finished.
* The BAD-BLOCK check detects an area (bad-block) in the flash memory where data validity cannot be guaranteed, and saves this information in the TOC-AREA so that a bad-block is not used.
BAD-BLOCK check Procedure:
1. Apply 1.5 V from re gulated power supply to the battery termi­nals.
2. Once the po wer is supplied, the check starts and then proceeds for approx. 45 seconds. (Be sure to keep applying the power and pin yj or TP13 (green)/Pin yh or TP14 (red) signal “H” during the check) * Green/red LED of
it cannot be seen visually. Check the signal of pin yh , yj or TP13, 14.
3. When the check completes, the result is shown as follows. OK:Pin yh or TP14 signal “L” (Pin yj or TP13 Signal “H”) NG:Pin yj or TP13 signal “H” (Pin yh or TP14 signal “L”)
4. In case of OK, press the
Note:
• In case of NG, check system controller IC (IC701), flash memory IC
(IC702) and the peripheral circuit. (Particularly , check carefully the sol­dering of the flash memory)
• After finishing the BAD-BLOCK check, assemble the set, load the dry
battery, and confirm if the set operates normally.
[OPR] indicator don't light up, therefore
[STOP] button.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam­aged by heat.
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.
2
Index to Parts and Controls
Refer to the pages indicated in parentheses for details.
Main unit
1 2 3 4
5 6 7 8
1 VOL (volume) control (14) 2 FILE button (10, 13, 18) 3 MIC (built-in microphone)
(10)
4 NxPLAY/STOP (play/
stop•enter) button (8, 14, 15)
5 –./>+ (fast forward/
fast backward•selection of menu mode) button (13, 15)
6 STOP button (11) 7 HOLD switch (25) 8 PLAY SPEED selector (19)
9 MENU button (8, 21, 34) 0 Display window (33) qa OPR (operation) indicator
(10, 14)
qs ERASE button (16) qd REC (record) START/STOP
button (10)
qf Speaker qg EAR (earphone) jack (15)
SECTION 2

GENERAL

9
q; qa qs qd qf qg
Display window
2
3
4
1 Total number of messages in
a file (13) Mode indication of the menu(21, 26 - 28) (On, OFF, etc.)
2 File indication (10, 13) 3 Current message number (10,
13)
4 Remaining recording time
indication (10) Recording date indication (14) Current time/day indication (8) Menu indication (8, 21, 26 ­28, 34) (ALARM, etc.) Messages (ERASE, SCAN, etc.)
ICD-47
This section is extracted from instruction manual.
51 6
7 8 9
5 Alarm indicator (23) 6 Battery exhausted indicator
(7)
7 Repeat play indicator (15) 8 REMAIN indication (10) 9 REC DATE indication (14)
Additional Information
32
Step 2: Setting the Clock
Clock setting display appears when you insert battery for the first time, or when you insert battery after the unit has been without battery for a certain period of time. In this case, proceed from Step 2.
Display the clock setting display.
1
1 Press MENU to enter
the menu mode.*
* The “ALARM” display may
appear instead of the “BEEP” display (see page 34).
Set the date.
2
1 Press –. or >+ to select the digits of the year.
2 Press –. once to display
“SET DATE”.
3 Press NxPLAY/STOP.
The year digits will flash.
Set the time.
3
1 Press –. or >+ to select the digits of the hour.
3 Set the minute.
2 Press NxPLAY/STOP.
The minute digits will flash.
4 Press NxPLAY/STOP at the
time signal.
The display will return to “SET DATE”.
Exit from the menu mode.
4
Press MENU.
33
Getting Started
2 Press NxPLAY/STOP.
The month digits will flash.
8
3 Set the month and day in
sequence, then press NxPLAY/STOP.
The hour digits will flash.
9
3
ICD-47
)
This set can be disassembled in the order shown below.

DISASSEMBLY FLOW

SECTION 3

DISASSEMBLY

Set
Note: Follow the disassembly procedure in the numerical order given.

Lid, Battery Case

Case (Front) Section
Case (Rear) Section Main Board
Installation “Main Board”, “Microphone, Electric Condenser” (MIC101
LID, BATTERY CASE
3 lid, battery case
2 boss
2 boss
1

“CASE (FRONT) SECTION”, “CASE (REAR) SECTION”

2 claw
speaker (SP101)
#
3
3 Remove the two solders
speaker lead (SP101).
1 screw
5 case (rear) section
2 three claws
2 three claws
4 case (front) section
4

MAIN BOARD

r
ICD-47
1 two screws
(M1.7 × 4)
2 bracket
(jack)
3 Remove the MAIN board to
direction of the arrow.

INSTALLATION “MAIN BOARD”, “MICROPHONE, ELECTRIC CONDENSER” (MIC101)

Note: On installation MAIN board adjust the S711, S712
and knob (HOLD, MODE).
microphone, electric condenser (MIC101)
S712
S711
knob (HOLD)
Install two leads the electric condenser microphone (MIC101) in the figure.
two leads
microphone, electric condense (MIC101)
knob (MODE)
5
ICD-47
SECTION 4

TEST MODE

[Setting Method of Test mode]
Short TP701 (TEST) on the MAIN board with a solder bridge (con­nect pin yf of IC701 to the ground). Then, turn on the power.
MAIN BOARD (Side A)
1. Audio test
A howling occurs with 5P DSP LOOP displayed on the LCD, if the [REC START/STOP] key is pressed.
The mute turns on, if [ +] key is pressed.
The mute turns off, if [-- ] key is pressed.
The microphone sensitivity becomes high, if the [HOLD] switch
turned off.
The microphone sensitivity becomes lo w, if the [HOLD] switch turned on.
2. Sleep/Wake up test
Pressing the [ ] key causes the set to enter sleep state.
Pressing another key causes the set to release sleep state.
3. LCD check
LCD light up all, if the [STOP] key is pressed.
Even segment of LCD light up as shown below, if the [FILE]
key is pressed.
LCD display
Nx
>
.
REC DATE
M
D
M
Y
M
S
D
Short : Test mode Open : Normal mode
[Releasing Method of Test Mode]
Turn of f the power . Then, open the solder bridge on TP701 (TEST) on the MAIN board.
TP701
)(
Odd segment of LCD light up as shown below, if the [ERASE] key is pressed.
LCD display
SP LP
REMAIN
4. Beep sound check
A beep (2.4 kHz) is kept sounding, if the
A beep stop sounding, if another key is pressed.
5. Power supply check
The battery is on the O.K. level when the [OPR] LED lights in green only, or it is off.
The battery is on the mark lighting level when the [OPR] LED lights in green and blinks in red repeatedly.
The battery is on the inactive le v el when the [OPR] LED blinks in red only.
[MENU] key is pressed.
[Operation of Setting on Test Mode]
When the test mode is set, the LCD displays TEST and [OPR] LED lights in green.
Note: The [OPR] LED turn off, if a key operated.
6
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