Shenzhen Airsmart Technology Co. Ltd. R602 ユーザーズマニュアル

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Features
How to use antenna
FM broadcasting
A built-in FM antenna(5) has been designed and provided in the 
device(figure II). At a common urban place (not far away from the 
transmission station), no external antenna is needed. When it's 
necessary to use an external antenna, please turn the "Internal/
External" change switch (6) in the rear of the radio (figure II) to 
"External". The external antenna for this device can be special 
external antenna for special cable antenna.
AM broadcasting
A built-in AM antenna(12)  has been designed and provided in the 
radio(figure II). At a common urban place (not far away from the 
transmission station), no external antenna is needed. When the 
reception is not so good, please change the "
"
 on the back of the radio(figure II) to "External".
Internal/External AM  
antenna change switch (8)
Audio input and output
Input: an AUX IN jack (7) is provided on the back of the 
radio (figure II). External signal sources (CD, PC, Mp3, 
etc.) can be connected to this jack through RCA audio 
cable. When using, please turn the function selection knob (2) 
on the front panel of the radio to "AUX IN". 
Output: there is LINE OUT jack (10) on the back of the 
radio (figure II). External recording or amplifying devices 
can be connected to this jack through 3.5mm audio cable. 
At this time, you can record or amplify the signal that the 
radio is receiving. An earphone jack(9) has been provided on 
the back (figure II)of radio, which can be connected with a
stereo earphone. When a subwoofer is needed, please connect 
to  "
 "
 
R ch speaker OUT  jack(11) on the back of radio.(figure II)
1
(Frequency Range) :
      FM     87
108MHz
      AM     520 1700KHz
2
Stereo Separation:   >30db
3
S / N radio:  
      FM >45db
      AM >35db
4
S/N sensitivity:
      FM   < 5 uv
      AM   < 1 mv
5
 Distortion:   FM  <1% , AM <2%
6
 No distortion output power :  
2 X 16W (4
)
7
 One Signal Selectivity :  less than 30dB
8
 Speaker frequency Response:    80Hz
16KHz
9
 Amplifier Frequency Response:  30Hz
20KHz
10
Internal Speaker:  4" / 4
 15W
11
Main IC Models: TDA7265 
NE5532
PHILIPS TEA5711
12
AC power: AC220V
13
Product size: 300 x 200 x 205 mm(R602-1/R602PW)
425 x 200 x 205 mm(R602S-1/R602SW) 
14
GW:    6.7KG(R602-1/R602PW)      7.0KG (R602S-1/R602SW)              
Trouble Shooting
Technical Data
Packing List
Radio
power cord            
External FM Antenna           
Spare fuse
User's manual  
1 pc
2 pcs
1 pc
1 pc
1 pc
1.Excellent circuit, GaAs MES-FET cell-based design and
high-quality components make the radio have sensitive
reception, good channel selection ability and strong anti-
    jamming capability.
2.Excellent circuit design and special speakers are adopted
to make the sound vigorous and elegant.
3.Particular Cat's-eye display circuit
4.Wooden case, classical design
5.A wide choice for stereo input & output: AUX IN; 
LINE  OUT; PHONE OUT; POWER OUT.
6.Strong output power 
Passive speaker 
(optional for R602/R602PW only)
1 pc
Trouble
Possible Causes
Performance
Resolutions
No sound
1. Not connected with 
power supply 
2. Fuse broken 
3. Wrong band position
4. Station stopped
1. LED without light 
2. LED without light
3. No signal 
4. Noise appears
1. Connect to power supply 
2. Replace fuse 
3. Change band & antenna switch
to correct position
4. Try to receive other stations
Distortion
1. AM inexact
2. Too high volume
1. Badly antenna connection
2. Wrong antenna position
3. Disturbance from other 
home appliances 
1. Distortion with noise
1. Adjust AM
2. Reduce the volume to
no distortion position
1. Connect antenna correctly
2. Change antenna switch to 
correct position
3. Turn off other appliances or 
change environment
1. Low signal from station,
significant hiss or buzz
2.Only receiving several 
programs together with 
significant noise
3.Noise accompanied with station
Significant 
noise