Page 1: ...1 Control functions 3 2 Dismantling eee sees 3 3 Regular maintenance 5 4 Mechanical servicing 6 5 Circuit description 13 6 Electrical adjustments 16 7 Diagrams ese eee cere eee 17 TANDBERG CR 222 a 3...
Page 2: ...noise ratio DIN 45500 Better than 58 dB Gerduschspannung A curve and better than 55 dB Fremd spannung Distortion max From tape at 0 dB record level 3 Inputs MIC Suitable for dynamic microphone with i...
Page 3: ...d Underneath the re program depressed before the RECORD corder there is also a manual cassette button can be used eject lever that can be used when the recorder is not connected to the power supply 2...
Page 4: ...of the board See fig 2 4 and proceed as follows 1 Re install the assembly by plugging the con nectors at the bottom of the board Fasten assembly with screws Al and A2 2 Place the lugs of lever D into...
Page 5: ...ds DO NOT USE ANY SHARP OBJECTS WHEN CLEANING DO NOT TOUCH THE ADJUST MENT SCREWS 3 Check the surrounding area for dust and de posits from the tape Clean if required Cleaning should be performed both...
Page 6: ...t Tape No 23 Azimuth Tandberg Test Tape No 29 Open cassette Instead of the Tandberg Test Tape No 29 one may use an ordinary high quality cassette which has been cut open so that the tape is visible Se...
Page 7: ...not pressing it downwards nor lifting it This is of great importance to the result of the ad justments 4 2 2 1 Pinch rollers Height Insert the Tandberg Adjustment Plate and move the mounting plate in...
Page 8: ...rollers touch the capstans at exactly the same time The pinch rollers will start rotating when they meet the capstans If required adjust the eccentric screw shown in fig 4 9 4 2 2 2 Erase head Preadj...
Page 9: ...s and does not bulge at the heads Azimuth Insert Tandberg Test Tape No 23 6300 HZ Connect a VTVM to the RADIO socket at the rear panel Set the recorder to PLAY and adjust with the screw AZ as shown in...
Page 10: ...rive belt 11 Place the new drive belt around the flywheels and hook it around the cassette guides see fig TAKE CARE NOT TO GET OIL OR GREASE ON THE DRIVE BELT 12 Replace the flywheel mounting plateand...
Page 11: ...t the connecting spring is stretched approximately 0 5 0 7 mm The figure shows how this check is made The microswitches are not shown in fig 4 24 3 If necessary adjust by turning the nylon screw in th...
Page 12: ...in when the PAUSE button is re leased both during PLAY and RECORD a an PAUSE ADJUST fig 4 25 Position of the PAUSE ADJUST screw IMPORTANT With the deck in PLAY release the PAUSE button and check that...
Page 13: ...ement of the upper bearings for the flywheels The worn out bearing can be hammered downwards on the capstan It needs not to be removed After being installed onto the capstan the new bea ring can be pr...
Page 14: ...IT 3 After a short period of time the voltage at piont A has been reduced so much that the base of Q202 drops lower than 10 3 V and the transis tor starts conducting 4 When Q202 starts conducting the...
Page 15: ...ting state During wind or rewind the supply motor works as a generator feeding a negative voltage to transistor Q106 which regulates the motor power supply The voltage from the power supply is therefo...
Page 16: ...azimuth screw on the record Unsolder one end of the jumper that is con playback head for maximum voltage on a VITVM nected in series with the collector of Q 165 connected to the RADIO socket See fig 6...
Page 17: ...Lt Buy apts prof ay woLf uaas pavog uly 9 eco ad eS Ce iL eeeee RIB Tt Has o 180 ai Cr8z Q183 Br sr 8 LHD 4t 7 oO C18 ets...
Page 18: ...g ite8 Garaett PED oe tev ae Oy sie fe2is te Fos ete 3 Fig 6 6 Position of the microswitches MS1 MS3 ib a oO r es sid ei esecr i ey fe 2legy coil al ae...
Page 19: ...FIER 1 BOARD R3 RECORD AMP Qi4i BCSu9C 302 HON XTAL CER INPUT 200 0 Life Secciayicas cmammisYan ai Gs cas sm cigeSn ms ee s mm a e S i a s Ss eames GaA 2 RECORD METER eet co ECB E Bc Ee ALL OC VOLTAGE...
Page 20: ...TANDBERG DUCATONML TANDBERG INDUSTRIER A S EDUCATIONAL DIVISION Olav Helsets vei 5 Oslo 6 P O Box 21 Bogerud Oslo 6 Norway 3001 2 79 Part no 714901 Printed in Norway by Optimal Offset a s...
