Technics RSDV 250 Service Manual
This is the 16 pages manual for Technics RSDV 250 Service Manual.
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Extracted text from Technics RSDV 250 Service Manual (Ocr-read)
Page 1
http://servis-manual.com/5 Service Mode Function of Cassette Mechanism TOP PREVIOUS NEXT This unit is equipped with a service mode function of cassette mechanism, so that if the unit operates incorrectly, the fault displayed using an error code on the FL display of the Tuner/Amplifier (SA- EH770). The system control IC and FLdisplay are part of the Tuner/Amplifier so make sure the system has been connected properly before using this function. Use this function during maintenance to check faults of items below. 5.1 Cassette tape to be prepared 5.2 Selecting service mode 5.3 Deck 1 mechanism check 5.4 Deck 2 mechanism check 5.5 Exiting service mode @ TOP PREVIOUS NEXT 20. 10. 2004 file://C:\Documents%20and%20Settings\Admin\Plocha\SCHÉMATA\VIDEA\PAN...
Page 2
http://servis-manual.com/5.1 Cassette tape to be prepared TOP PREVIOUS NEXT l Metal tape: Recorded music tape with only one erasure prevention tab intact./(use middle portion of tape) l Normal tape: /CrO2 tape: Recorded music tape with both erasure prevention tabs intact./(use middle portion of tape) @ TOP PREVIOUS NEXT
Page 13
MAIN CIRCUIT A MECHANISM CIRCUIT (DECK1) B MECHANISM CIRCUIT (DECK2) C CP901 CS951 CP902 CS971 Q806 DTA143EUT106 MOTOR DRIVE CONT. Q804 2SD592ARSTA MOTOR DRIVE CP3051 2 3 4 Z971 1 2 3 4 5 6 7 4.7K 50K 25K 4.7K 4.7K 4.7K50K 50K 50K 50K 25K 25K A B D C IC971 0N2180RLC1 PHOTO INTERRUPTER C AB Q803 2SD592ARSTA MOTOR DRIVE Q805 DTA143EUT106 MOTOR DRIVE CONT. CP3061 2 3 4 123456789 123456789 Q807 2SB621ARSTA SOLENOID DRIVE Q809 DTC143EUT106 SOLENOID DRIVE Q810 DTC143EUT106 SOLENOID DRIVE Q808 2SB621ARSTA SOLENOID DRIVE DL E K CAPSTAN MOTOR (DECK1) A B M CAPSTAN MOTOR (DECK2) A B M 123456789 123456789 R806 10K R802 560 R823 560 R824 560 R812 560 R811 10K R814 470 R818 2.2 R805 3.9K R803 10K R810 10K R808 3.9K VR803 5K(B) VR801 5K(B) R820 2.2 R813 470 B AC R952 820D951 MA165TA SOLENOID S951 (MODE) S953 (CrO2) S952 (HALF) S973 (CrO2) S976 (METAL) S972 (HALF) S971 (MODE) S974 (R.REC.INH.) S975 (F.REC.INH.) R972 820D971 MA165TA SOLENOID D IC951 0N2180RLC1 PHOTO INTERRUPTER R953 39K 1 2 3 4 A GHB QS PF R973 39K 1 2 3 4 :POSITIVE VOLTAGE LINE 5V 10.3V 5V 10.3V 5V 10.3V 5V 5V 10.3V 0V 10.3V 0V 0V 10.2V 0V10.2V 0V10.3V 0V 10.3V 0V 0V 9.8V 5V 0V 5V TAPE SPEED ADJ.(DECK1) 0V 5V 5V 0V 0V0.8V TAPE SPEED ADJ.(DECK2)