Sunday, May 24, 2015

SONY CLOCK RADIO ICF- C470 -- C470L CLOCK RADIO Adjustments

ICF-C470 --C470L CLOCK RADIO Adjustments & Circuit Diagram _ SONY CLOCK RADIO
ADJUSTMENTS
Setting the clock and the date
Plug in the unit.  The display will flash ‘AM 12:00” or “0:00”.
While holding down CLOCK, press the Time-Set+ or –ve till the correct time appears in the display.  When you release the CLOCK, the clock begins to operate..  the clock system varies depending on the model you own.  12- hour system: “AM 12:00” = Midnight.  24 hour system “0:00” = Midnight.  To set the current time rapidly, keep pressing the “TIME SET” + or – ve while holding down the clock.
OPERATING THE RADIO
Press RADIO ON / SLEEP to turn on the radio and adjust VOLUEME.  Select FM, AM / LW and tune in to a station using TUNING.
ADJUSTING THE BRIGHTNESS OF THE DISPLAY
Set BRIGHTNESS to the position which gives you the desired display visibility [High or Low].  To turn OFF the radio, press RADIO OFF / ALARM RESET / OFF. 
TO IMPROVE RADIO RECEPTION
FM:  extent the FM wire antenna fully to improve FM reception.
AM [MW] / LW: rotate the unit horizontally for optimum reception.  A ferrite bar antenna is built into the unit.
SETTING ALARM
To set the radio alarm, first tune in to a station and adjust volume.
While holding down the ALARM (A) RADIO, for the radio, or (b) BUZZER, for the buzzer, press TIME SET + or – till the desired time appears in the display.
When you release ALARM OR THE ALARM A or B indicator stops flashing and lights up, and the current time in the display.  The alarm will come on at the preset time and will automatically turn itself off after 59 minutes.
ADJUSTING THE ALARAM LEVEL
Adjust the loudness of the alarm by setting B BUZZER VOLUEME to Small, Medium or Big.  If you set Alarm A and alarm B to the same time, only Alarm A will work.  The Buzzer Volume switch affects only the loudness of the buzzer alarm.  Use Volume to adjust the volume of the radio alarm.  To shut off the Alarm, press Radion Off / Alarm reset / Off.  The alarm will come on at the preset time the next day.  To cancel either alarm, press Radion Off / Alarm Reset / Off while holding dowon alarm A or B.
To doze for a few minutes, press NOOZW/DATE/SLEEP OFF.  The alarm will shut off, but will come on again after 6 minutes.  You can repeat this process as many times as you like.  To check the preset time, press ALARM (A) or (B)
SETTING THE SLEEP TIMER
Press RADIO ON/SLEEP.  The radio turns on.
Press RADIO ON/SLEEP repeatedly until the desired preset time appears on the display (90,60,45 or 15 minutes).  For every push the display changes as: Current time > 90 > 60 > 45 > 30 > 15 >  <(Back to current time).  The radio will play for the duration you have set, and will then turn off automatically.  To turn on the radio before the preset time, press SNOOZE/DATE/SLEEP OFF. 
ICF-C470 Schematic & PWB
ICF-C470L Schematic & PWB
DISASSEMBLY
CHASSIS & PARTS
CABINET & PARTS
CLICK ON THE PICTURES TO ZOOM IN