Technics RS-DV250 Service Manual page 5

5.3 Deck 1 mechanism check
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1. Press the Deck 1/deck 2 select button to change the flashing Deck 2 indicator to Deck 1. Refer
to Fig. 5-2. /(No change required if Deck 1 indicator already flashing.)
2. Press the Deck 1 cassette holder open button to open the Deck 1 cassette holder. Refer to
5-2.
3. Insert a CrO2 tape into the Deck 1 and close the cassette holder.
4. Press the Fast forward button. Refer to
stops.)
5. Press the PLAY button. Refer to
6. Open the Deck 1 cassette holder and replace the tape with a normal tape.
7. Close the Deck 1 cassette holder.
8. Press the Record pause button. Refer to
9. Press the STOP button. Refer to
5-1. Each time the STOP button is pressed, the fault items are displayed in sequence.
FL
display
H01 Cassette deck does not operate correctly.
H02 Unit does not record or the unit goes into recording mode even when the
erasure prevention tabs have been removed from the cassette.
H03 Tape does not play even when the tape deck play button is pressed.
The motor operates when the tape deck play button is pressed even if
cassette is loaded in the deck.
H06 Cassette deck does not detect CrO2 tape.
H07 Cassette deck does not detect Metal tape.
F01 When the tape play button is pressed, tape advances only slightly and
then stops.
F02 TPS (tape program search) does not work.
Fig. 5-2.
Fig. 5-2. /(After TPS operation and check, the tape stops.)
Fig. 5-2.
Fig. 5-2. A mechanism error code is displayed. Refer to Table
Fig. 5-2.
Table 5-1.
Symptom
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/(Tape fast forwards for about 2 seconds then
/(No record operation.)
Cause
Faulty cassette deck mechanism mode detect switch (Deck 1: S951,
Deck 2: S971), plunger and capstan motor. /(Check and replace)
Faulty erasure prevention tabs detect switch (S974, S975) or short-
circuit. (Check and replace)
Faulty tape detect switch (Deck 1: S952 Deck 2: S972) or short-circuit.
(Check and replace)
Faulty CrO2 tape detect switch (Deck 1: S953, Deck 2: S973)./(Check
and replace)
Faulty Metal tape detect switch (S976). (Check and replace)
Reel pulse error (Faulty Hall IC). (Check and replace)
Faulty TPS signal detection or faulty plunger control. /(Check and
replace mechanism control IC)
Fig.