Panasonic RR-QR230E User manual

Power requirement : DC 3.0 V (2 AAA size/LR03
batteries)
Power output : 300 mW (max.)
Frequency response : 300 Hz to 5,000 Hz (HQ mode)
300 Hz to 3,400 Hz (FQ mode)
300 Hz to 2,700 Hz (SP mode)
S/N : 37 dB (HQ mode)
Output jack : Earphone, ø 3.5 mm; 0.5 mW 16
Ω
Input jack : Mic, ø 3.5 mm; 0.56 mV plug in
power
Speaker : 20 mm 8 Ω
1 Safety Precautions 3
1.1. GENERAL GUIDELINES 3
1.2. Protection Circuitry 3
©2007 Matsushita Electric Industrial Co. Ltd.. All
rights reserved. Unauthorized copying and
distribution is a violation of law.
RR-QR230E
Colour
(K)..........Black Type
Dimensions (W x H x D) :
Max dimensions : 39.3 mm x 105.5 mm x 17.2 mm
Cabinet dimensions : 38.8 mm x 105 mm x 14 mm
Mass :
With drycell batteries : Approx. 60 g
Without batteries : Approx. 37 g
Operational temperature range : 0°Cto40°C
Memory capacity : 64 MB
Battery life : [Whenusedat25°Conaflat,
stable surface]
Notes :
1. Specifications are subject to change without notices.
1.3. Safety Part Information 3
2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 4
IC Recorder
Specification
CONTENTS
Page Page
ORDER NO. MD0703032CE

3 Handling the Lead-free Solder 5
3.1. Service caution based on legal restrictions 5
4 Operating Procedures 6
4.1. Components of IC Recorder 6
4.2. Test Mode 7
5 Assembling and Disassembling 13
5.1. Notes 13
5.2. Disassembly flow chart 13
5.3. Main Parts Location Diagram 14
5.4. Disassembly of Rear Cabinet Assembly 15
5.5. Disassembly of the Main P.C.B 16
5.6. Disassembly of the LCD Spacer 16
5.7. Disassembly of the Speaker 17
6 Voltage Measurement & Waveform Chart 18
6.1. Voltage Measurement 18
6.2. Waveform Chart 20
7 Wiring Connection Diagram 21
8 Block Diagram 23
9 Notes Of Schematic Diagram 25
10 Schematic Diagram 27
11 Printed Circuit Board Diagram 31
12 Illustration of IC's, Transistors and Diodes 33
13 Exploded Views 34
13.1. Cabinet Parts Location 34
13.2. Packaging 35
14 Replacement Parts List 36
2
RR-QR230E

1 Safety Precautions
1.1. GENERAL GUIDELINES
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
1.2. Protection Circuitry
The protection circuitry may have operated if either of the following conditions are noticed:
· No sound is heard when the power is turned on.
· Stops during a performance.
The function of this circuitry is to prevent circuitry damage if, for example, the positive and negative speaker connection wires are
“shorted”, or if speaker systems with an impedance less than the indicated rated impedance of the amplifier are used.
If this occurs, follow the procedure outlines below:
1. Turn off the power.
2. Determine the cause of the problem and correct it.
3. Turn on the power once again after one minute.
Note:
When the protection circuitry functions, the unit will not operate unless the power is first turned off and then on again.
1.3. Safety Part Information
Safety Parts List:
There are special components used in this equipment which are important for safety.These parts are marked by in the
Schematic Diagrams & Replacement Parts List. It is essential that these critical parts should be replaced with manufacturer’s
specified parts to prevent shock, fire or other hazards. Do not modify the original design without permission of manufacturer.
Table 1
Reference No. Part No. Part Name & Description Remarks
ICP2 D4FBR7500008 IC RESETTABLE FUSES [M]
3
RR-QR230E

2 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid state) devices can be damaged easily by electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and
semiconductor “chip” components. The following techniques should be used to help reduce the incidence of component damage
caused by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equiped assembly, drain off any ESD on your
body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap,
which should be removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equiped with ES devices, place the assembly on a conductive surface such as aluminium
foil, to prevent electrostatic charge build up or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static (ESD protected)” can
generate electrical charge to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most
replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminium foil or
comparable conductive material).
7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).
4
RR-QR230E

3 Handling the Lead-free Solder
3.1. Service caution based on legal restrictions
3.1.1. General description about Lead Free Solder (PbF)
The lead free solder has been used in the mounting process of all electrical components on the printed circuit boards used for this
equipment in considering the globally environmental conservation.
The normal solder is the alloy of tin (Sn) and lead (Pb). On the other hand, the lead free solder is the alloy mainly consists of tin
(Sn), silver (Ag) and Copper (Cu), and the melting point of the lead free solder is higher approx.30 degrees C (86°F) more than that
of the normal solder.
Definition of PCB Lead Free Solder being used
The letter of “PbF” is printed either foil side or components side on the PCB using the lead free solder.
(See right figure)
Service caution for repair work using Lead Free Solder (PbF)
· The lead free solder has to be used when repairing the equipment for which the lead free solder is used.
(Definition: The letter of “PbF” is printed on the PCB using the lead free solder.)
· To put lead free solder, it should be well molten and mixed with the original lead free solder.
· Remove the remaining lead free solder on the PCB cleanly for soldering of the new IC.
· Since the melting point of the lead free solder is higher than that of the normal lead solder, it takes the longer time to melt
the lead free solder.
· Use the soldering iron (more than 70W) equipped with the temperature control after setting the temperature at 350±30
degrees C (662±86°F).
Recommended Lead Free Solder (Service Parts Route.)
· The following 3 types of lead free solder are available through the service parts route.
RFKZ03D01K-----------(0.3mm 100g Reel)
RFKZ06D01K-----------(0.6mm 100g Reel)
RFKZ10D01K-----------(1.0mm 100g Reel)
Note
* Ingredient: Tin (Sn), 96.5%, Silver (Ag) 3.0%, Copper (Cu) 0.5%, Cobalt (Co) / Germanium (Ge) 0.1 to 0.3%
5
RR-QR230E

4 Operating Procedures
4.1. Components of IC Recorder
4.1.1. Basic control operation on Quick Search Dial
6
RR-QR230E

4.2. Test Mode
4.2.1. Operation Check Mode
This unit is equipped with the functions to check it to record or playback usually, the display of LCD and USB connection.
Caution!
When the checking operation is performed, all recorded data will be cleared.
Note:
· When there are no available items of any track, the unit can not be operated to check it to record and playback.
To continue record and playback check, erase unneeded items.
· For operation check mode, external microphone (not included), earphone (not included) and computer are necessary.
Note:
− − −
− You can use a condenser microphone without a built-in power supply. Plug type: 3.5mm (1/8in) monaural.
− − −
− Hearphone: Plug type; 3.5mm (1/8in) monaural.
4.2.2. To Enter into test mode
1. Set to [HOLD] mode.
2. Installed batteries into unit.
3. Press & hold down the [ERASE] switch, follow by the [STOP] switch & [REW] button.
Note:
The item 3 shown above should be operate within 3 seconds.
4. After all segment of LCD Lights up, the unit is entered to Operation Check Mode. During the Operation Check Mode, the
Recording LED is blinking.
5. To cancel test mode, power off the unit by remove batteries
4.2.3. Test Mode
Note:
The LCD indications shown below are examples of test mode with the folder A and no recording data.
1. Enter into test mode, check all segment of LCD lights up.
Fig. 1
· RECORDING INDICATOR: Flashing
2. Release the HOLD mode, by sliding [HOLD] switch down.
3. Check the display of LCD is displayed as shown below.
Fig.2
· RECORDING INDICATOR: Flashing
4. Rotate the jog to the right [JOG +]
5. Check the display of LCD is displayed as shown below.
7
RR-QR230E

Fig.3
· RECORDING INDICATOR: Flashing
6. Rotate the jog to the left [JOG -].
7. Check the display of LCD is displayed as shown below.
Fig.4
· RECORDING INDICATOR: Flashing
8. Press the [REC/PAUSE] button.
9. Check the display of LCD is displayed as shown below.
Fig.5
10. Press the [STOP] switch.
11. Check the display of LCD is displayed as shown below.
Fig.6
12. Press the [FOLDER/MENU] switch.
13. Check the display of LCD is displayed as shown below.
8
RR-QR230E

Fig.7
· Checking for model No
14. Press [ERASE] button.
Fig.8
· Checking for software version
15. Press the [FF] switch.
16. Check the display of LCD is displayed as shown below.
Fig.9
17. Press the [VOL +] switch.
18. The recording begining(HQ-MONOURAL), Make sure that LCD recording level indication moves.
· Input signal: Piano reproduction sound
Fig.10
19. Make it a non-signal input and level meter should not move.
20. Press the [VOL +].
21. It changes into the built-in stereo microphone (HQ-STEREO).
It confirmed that the file no. advances.
(input signal: Piano reproduction sound)
9
RR-QR230E

Fig.11
22. Insert the external microphone.
23. It changes into the external-microphone.
It confirmed that the file no. advances.
24. Record a sound source signal (L: 400Hz, R: 1kHz/1mV) from external microphone.
Fig.12
25. Press the [REW] switch.
26. Check the display of LCD is displayed as shown below.
(The File No. is displayed)
· Note: Please delete everything and start over from scratch when the number of files is different.
Fig.13
27. Remove the external microphone.
28. Press the [VOL -] switch.
The sound recorded by item.17 is reproduced.(Vol.:max.)
29. The time counter of LCD advances and it checks that sound comes out from the speaker.
Fig.14
30. Press the [VOL -] switch.
The sound recorded by item.21 is reproduced.
31. The time counter of LCD advances and it checks that sound comes out from the speaker.
10
RR-QR230E

Fig.15
32. The output is checked with an oscilloscope etc.
(L: 400Hz, R: 1kHz)
Fig.16
33. Insert the earphones.
34. Check the sound is output from the earphones.
(Volume is set as 13.)
35. Check the display of LCD is displayed as shown below.
Fig.17
36. Remove the earphones.
· To reset the unit to its initial factory setting (Initialization)
1. Press the [PLAY/STOP] switch for 10 seconds.
2. Check the display of LCD is displayed as shown below.
(Note: All indicators on LCD will switch off during formatting)
Fig.18
· Note: When there is failure in formating. The display of LCD is displayed as shown below:
11
RR-QR230E

Fig.19
3. Operation Check Mode is canceled when the battery cover is opened.
12
RR-QR230E

5 Assembling and Disassembling
5.1. Notes
“ATTENTION SERVICER”
Some chassis components may be have sharp edges. Be careful when disassembling and servicing.
1. This section describes procedures for checking the operation of the major printed circuit boards and replacing the main
components.
2. For reassembly after operation checks or replacement, reverse the respective procedures.
Special reassembly procedures are described only when required.
3. Select items from the following index when checks or replacement are required.
Below is the list of disassembly sections
· Disassembly of Rear Cabinet Assembly
· Disassembly of Main P.C.B
· Disassembly of LCD Spacer
· Disassembly of Speaker
5.2. Disassembly flow chart
The following chart is the procedure for disassembling the casing and inside parts for internal inspection when carrying out the
servicing. For the digital receiver unit only.
To assemble the unit, reverse the steps shown in the chart below.
13
RR-QR230E

5.3. Main Parts Location Diagram
14
RR-QR230E

5.4. Disassembly of Rear Cabinet
Assembly
Step 1 : Remove 3 screws.
Step 2 : Release the catch to remove the MIC Ornament as
arrow shown.
Step 3 : Open the battery cover.
Step 4 : Remove 1 screw.
Step 5 : Remove the Rear Cabinet Assembly as arrow shown.
Note : Exercise with care in releasing the catches.
15
RR-QR230E

5.5. Disassembly of the Main P.C.B
· Follow the (Step 1) - (Step 5) of item 5.4.
Step 1 : Detach the connector P101.
Step 2 : Gently push down the joystick with your thumbs to
release the Main P.C.B.
Step 3 : Remove the Main P.C.B as arrow shown.
5.6. Disassembly of the LCD
Spacer
· Follow the (Step 1) - (Step 5) of item 5.4.
· Follow the (Step 1) - (Step 3) of item 5.5.
Step 1 : Remove 2 screws.
Step 2 : Release the LCD Holder as arrow shown.
Step 3 : Remove the LCD Holder as arrow shown.
16
RR-QR230E

Step 4 : Lift up the LCD Panel as arrow (1) shown and tilt the
LCD Panel as arrow (2) shown from the LCD Holder.
Step 5 : Tilt the LCD Holder & remove the LCD Spacer as
arrow shown.
5.7. Disassembly of the Speaker
· Follow the (Step 1) - (Step 5) of item 5.4.
· Follow the (Step 1) - (Step 3) of item 5.5.
Step 1 : Remove 2 screws.
Step 2 : Remove the Speaker Plate as arrow shown.
Step 3 : Remove the Speaker as arrow shown.
17
RR-QR230E

6 Voltage Measurement & Waveform Chart
Note:
· Indicated voltage values are the standard values for the unit measured by the DC electronic circuit tester (high-impedance)
with the chassis taken as standard.
Therefore, there may exist some errors in the voltage values, depending on the internal impedance of the DC circuit tester.
· Circuit voltage and waveform described herein shall be regarded as reference information when probing defect point
because it may differ from actual measuring value due to difference of Measuring instrument and its measuring condition
and product itself.
6.1. Voltage Measurement
6.1.1. Main P.C.B.
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RR-QR230E

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RR-QR230E

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/1&'                    
%&2.#;   
56#0&$;
4GH0Q
/1&'        
%&2.#;   
56#0&$;
4GH0Q
/1&' )&5 '%$ )&5 '%$ '%$
%&2.#;     
56#0&$;
4GH0Q
/1&' )&5 '%$ '%$ '%$
%&2.#;    
56#0&$;
+%
+%
+%
3
3 34 34 34
3 3 3 3
6.2. Waveform Chart
IC101 PIN 6
PLAY
47.4Vp-p (10msec.div)
IC101 PIN 7
PLAY
48.4Vp-p (10msec.div)
IC202 PIN 17
PLAY
4.0Vp-p (10msec.div)
IC101 PIN 96
PLAY
31.6Vp-p (10msec.div)
IC202 PIN 18
PLAY
4.44 Vp-p (10msec.div)
IC202 PIN 20
PLAY
4.16Vp-p (10msec.div)
IC202 PIN 21
PLAY
7.52Vp-p (25msec.div)
20
RR-QR230E