User manual PIONEER SJ-MR220 SERVICE MANUAL

[. . . ] ORDER No. AD0109126C8 Portable MD Recorder SJ-MR220 MD unit: RAE1640Z-M Mechanism Series Colour (S). . . . . . . . . . . . . . . . . . . Silver Type (W). . . . . . . . . . . . . . . . . . White Type [(GH) area only. ] Areas EB. . . . . . . . . . . . . . . . . . . Great Britain. GH. . . . . . . . . . . . . . . . . . . Hong Kong. 1 SPECIFICATIONS Specifications Audio System: Laser: Sampling frequency: Coding: No. of channels: Frequency response: Wow and flutter: General Input terminal OPT/LINE IN jack Impedance: Input level: MIC jack Impedance: Input level: Output terminal Output Jack: Power output: Power supply Phones, 22 3. 5 mW+3. 5 mW 600 SENS H: 0. 4mV SENS L: 2. 5mV 22k SENS H: 178mV SENS L: 500mV MiniDisc digital audio system Semiconductor laser (=780 nm) 44. 1 kHz Adaptive Transform Acoustic Coding (ATRAC / ATRAC3) 2 (left and right, stereo) 1 (monaural) 20 Hz-20 kHz (+0 dB, -8dB) Below measurable limit 2 Rechargeable battery: DC 1. 2V (included rechargeable battery) Battery: AC adaptor: Dimensions (WxHxD) Cabinet dimensions: incl. projecting parts: Weight: 78. 2x71. 6x16. 0 mm 80. 4x74. 1x18. 3 mm 115 g (with battery) 88 g (without battery) Play time (When used in hold mode, at 25°C, on a flat, stable surface) Battery type: Rechargeable Normal: LP2: LP4: Panasonic alkaline Normal: LP2: LP4: Both together Normal LP2: LP4: About 54 hours About 71 hours About 82 hours About 25 hours About 34 hours About 44 hours About 42 hours About 54 hours About 62 hours About 19 hours About 26 hours About 34 hours About 11. 5 hours About 15 hours About 17 hours About 5. 5 hours About 8 hours About 9. 5 hours Play time Record time DC 1. 5V (One LR6, AA, UM-3 battery) DC 1. 8V (included AC adaptor) Notes: - The play time may be less depending on the operating conditions. Weight and dimensions are approximate. 2001 Matsushita Electric Industrial Co. , Ltd. [. . . ] Press the PLAY key of the remote controller (change the display of the LCD to "T1**" , off-set automatic adjustment will be finished. ). 6. 2. 4. Have "T2**" indicated on display, and move the optical pickup to around the center. 22 2. Set the full-recorded magneto-optical disc with the prevention erase situation. Remote controller's LCD [(GH) area only] lights "T unit's LCD lights all when you can detect all keys. " and main 6. Perform below voltage check about the keys come under if you cannot detect the key. Main unit's keys HOLD REC PAUSE EDIT STOP PLAY Check points TP403 IC501 3pin IC501 3pin IC501 3pin IC501 3pin ON 0V 0. 12V 1. 96V 1. 05V 0V OFF 2. 2V 2. 2V 2. 2V 2. 2V 2. 2V 7. When the keys are ready for detection, press the PLAY key of the remote control. Pressing each key mounted to the main body, make sure of displayed three letters (4th ~ 6th letters) on the right side of the 24 remote control. / When the 3 keys apportioned to the respective letters as shown below are all OK, "0" is displayed. Display position 4th. letter Main unit's keys Flat pad lower rank 3 keys Flat pad middle rank 3 keys Flat pad upper rank 3 keys 9. Upon detection of all keys, "000" is shown on the right side of LCD of the remote control [(GH) area only]. Perform below voltage check about the keys come under if you cannot detect the key. Main unit's keys Flat pad (*1) Check points IC501 65~67pin ON 2. 2V OFF 0V 11. Remove the battery when you exit from this mode. Note: Refer to "12. Printed Circuit Board and Wiring Connection Diagram" for the test points. 7. Troubleshooting Guide 25 26 27 28 29 30 31 32 33 8. directly, refer to the table shown below for the criterion in the time of repairing or checking. 34 Circuit No. Part No. Function Symptom Check point Confirm the voltage of IC902 (pin 14) or (TP137) Confirm the voltage of IC501 (pin 74) Confirm the motor drive wave form of TP145, 146, 147 and 148 (CN901 pins 1, 2, 3 and 4). Result and measure If voltage at TP137 normal and voltage IC501 is unusual, check IC501 and switch periphery. If drive wave form normal, check FPC condition of solder around lift motor, and nothing unusual is found, replace the motor. If drive wave form unusual, check supply voltage of IC401 and peripheral solder, and nothing unusual is found, replace IC401. If input wave form IC601 is unusual, check supply voltage of IC701 and peripheral solder, and if nothing unusual found, replace IC701. If input wave form IC601 is normal, check IC601 and perihperal circuit. IC304C0DBAGZ00006DC-DC converter Recording is / 3. 5V / Power impracticable. IC for magnetic head driver control IC901 C0GBE000003 Optical head lift motor drive Recording is impracticable. Magnetic head fails to descend. IC601 C0FBAJ000008 A/D CONVERTER Optical input permits recording, but line input does not. MIC recording is impracticable. Make sure of IC101 (pin 27) input wave form (during MIC/LINE input time). 9. [. . . ] *Capacity values are in microfarads (uF) unless specified otherwise, P=Pico-farads (pF) F=Farads (F) / *Resistance values are in ohms, unless specified otherwise, 1K=1, 000 (OHM), 1M=1, 000K (OHM) *The marking <RTL> indicates that the Retention Time is limited for this item. After the discontinuation of this assembly in production, the item will continue to be available for a specific period of time. The retention period of availability is dependant on the type of assembly , and in accordance with the laws governing part and product retention. After the end of this period, the assembly will no longer be available. [. . . ]