SONY TXD-R11 (01) PDF MANUAL

The laser diode in the optical pick-up block may suffer electrostatic breakdown because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body.

During repair, pay attention to electrostatic breakdown and also use the procedure in the printed matter which is included in the repair parts.

The flexible board is easily damaged and should be handled with care.

The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pick-up block. Therefore, when checking the laser diode emission, observe more than 30 cm away from the objective lens.

1. Make POWER switch on with no disc inserted and disc table closed.

2. Confirm that the following operation is performed while observing the objective lens:

– Confirm that laser beam is spread.

– Up and down motion of the objective lens (3 times).

1 POWER button

2 Disc tray

3 Display window

4 DISPLAY button

5 RESET button

6 PLAY MODE button

7 CD SYNCHRO button

8 REC MUTE button

9 FADER button

10 ARL button

11 REC button

12 REC LEVEL control

13 Tape operation buttons:

►►: Fast winding

►: Forward play

◄: Reverse play

II: PAUSE

■: STOP

▲: EJECT

14 Cassette holder

15 TIME button

16 REPEAT button

17 CHECK button

18 CLEAR button

19 EDIT/TIME FADE button

20 CD operation button:

▲: OPEN/CLOSE

II: PAUSE

■: STOP

▷: PLAY

◄◄ ►►: Manual search

21 PHONES jack

22 PHONES LEVEL control

23 DIR MODE switch

24 DOLBY NR switch

Unscrew the four case attachment screws (CASE 3 TP2) and remove the case.

1. Turn the cam to the direction of the arrow with a screwdriver.

2. Pull out disc table.

3. Remove loading panel.

4. Remove three screws (BVTT3 × 6).

5. Remove flat cable (CN805).

6. Remove two flat cables (CN803, 804).

7. Remove two knobs.

8. Remove front panel.

1. Remove two screws (BVTT3 × 6).

2. Remove flat cable (CN102).

3. Remove connector (CN291).

4. Release two claws.

5. Remove CD unit.

1. Push eject button.

2. Remove cassette lid assy.

3. Remove two screws (BVTP2.6 × 8).

4. Remove two screws (BVTP2.6 × 6).

5. Remove mechanism deck.

1. Clean the following parts with a denatured alcohol-moistened swab:

– record/playback/erase head

– pinch roller

– rubber belts

– capstan

– idlers

2. Demagnetize the record/playback head with a head demagnetizer. (Head demagnetizer do not approach for the erase head.)

3. Do not use a magnetized screwdriver for the adjustment.

4. After the adjustments, apply suitable locking compound to the parts adjusted.

5. The adjustments should be performed with the rated power supply voltage unless otherwise noted.

1. The adjustment should be performed in the publication. (Be sure to make playback adjustment at first.)

2. The adjustments and measurement should be performed for both L-CH and R-CH.

Switch position:

– DOLBY NR switch: OFF

– DIR MODE switch: 〓

Standard record position:

Deliver the standard input signal level to input jack and set the REC LEVEL control to obtain the standard output signal level as follows.

0dB=0.775V

1. Insert a short-circuit plug into TP801 (2P) and turn ON the power switch. (Earth pin 19 of IC801 and turn ON the power switch.) At first, all the fluorescent tubes light up, then the system returns to normal display. (However, “0000” is not displayed on the counter.)

2. To release the test mode, remove the short plug and turn off the power switch.

3. Remove the short plug after completion of adjustment.

Procedure:

1. Forward playback Mode.

– Use test tape P-4-A100 (10kHz, –10dB).

– Connect a VTVM (47k Ω load) to LINE OUT.

2. Turn the adjustment screw for the maximum output levels. If these levels do not match, turn the adjustment screw until both of output levels match together within 1dB.

3. Playback Mode (Lissajous pattern observation):

– Use test tape P-4-A100 (10kHz, –10dB).

– Connect L-CH and R-CH from LINE OUT (through 47k Ω resistors) to an oscilloscope (H and V inputs).

– Adjust for an “in phase” (good) screen pattern. A 90°, 135°, or 180° (wrong) pattern indicates misalignment.

4. Change to the reverse playback mode and repeat the steps 1 to 3.

5. After the adjustment, lock the adjustment screws with suitable locking compound.

Adjustment Location: record/playback head (forward side and reverse side adjustment screws).

Procedure: Forward Playback Mode

1. Set to FWD playback mode.

– Use test tape WS-48B (3kHz, 0dB).

– Connect a frequency counter (47k Ω load) to LINE OUT.

2. Adjust RV71 so that the frequency counter reading becomes 3,000 ± 10Hz.

Frequency difference between the beginning and the end of the tape should be within 3%.

Adjustment Location: AUDIO board.

Procedure: Forward Playback Mode

– Use test tape P-4-L300 (315Hz, 0dB).

– Connect a VTVM (47k Ω load) to LINE OUT.

Adjust RV11 (L-CH) and RV21 (R-CH) so the VTVM reading becomes the adjustment limits below.

Adjustment Value: LINE OUT level: –7.7 ± 0.5dB (0.301 to 0.338V).

Level difference between channels: within 0.5dB.

Confirm the LINE OUT level does not change in playback mode while changing the mode from playback to stop several times.

Adjustment Location: AUDIO board.

Setting: REC LEVEL control: standard record position (Refer to page 6 of the PDF for standard record position details).

Procedure:

1. Record Mode:

– Input signals from AF OSC (600 Ω output impedance) through a 10k Ω attenuator to LINE IN: 1) 315Hz, 2) 10KHz. Set level to 50mV (–23.8 dB).

– Record onto a blank tape CS-123.

2. Playback Mode:

– Playback the recorded portion.

– Connect a VTVM (47k Ω load) to LINE OUT.

Confirm that the 10kHz playback output is 0 ± 0.5dB relative to the 315Hz output. If necessary, adjust RV12 (L-CH), RV22 (R-CH) and repeat the steps given above.

Adjustment Value: LINE OUT level: –23.8 ± 0.5 dB (47.2 to 53.0 mV).

Adjustment Location: MAIN board (RV12, RV22 on AUDIO board conductor side for Bias Consumption Current/Record Bias).

Setting: REC LEVEL control: standard record position (Refer to page 6 of the PDF for standard record position details).

Procedure:

1. Record Mode:

– Input signal from AF OSC (600 Ω output impedance) through a 10k Ω attenuator to LINE IN: 315Hz. Set level to 50mV (–23.8 dB).

– Record onto a blank tape CS-123.

2. Playback Mode:

– Playback the recorded portion.

– Connect a VTVM (47k Ω load) to LINE OUT.

Confirm playback the tape recorded becomes adjustment level as follows. If necessary, adjust RV111 (L-CH), RV211 (R-CH) and repeat the steps 1 and 2.

Adjustment Location: MAIN board (RV111, RV211 component side for Record Level).

1. CD Block basically constructed to operate without adjustment. Therefore, check each item in order given.

2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.

3. Use the oscilloscope with more than 10MΩ impedance.

4. Clean an object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

Procedure:

1. Connect oscilloscope to test point TP (FE) on BD board. (TP (VC) is common/ground).

2. Connect between test point TP (FEI) and TP (VC) by lead wire.

3. Turned Power switch on.

4. Put disc (YEDS-18) in and turned Power switch on again and actuate the focus search. (actuate the focus search when disc table is moving in and out.)

5. Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 3±1Vp-p.

6. After check, remove the lead wire connected in step 2.

Note: Try to measure several times to make sure that the ratio of A: B or B: A is more than 10: 7. Take sweep time as long as possible and light up the brightness to obtain best waveform.

Procedure:

1. Connect oscilloscope to test point TP (RFO) on BD board. (TP (VC) is common/ground).

2. Turned Power switch on.

3. Put disc (YEDS-18) in and playback.

4. Confirm that oscilloscope waveform is clear and check RF signal level is correct or not. (VOLT/DIV: 200mV, TIME/DIV: 500nS, level: 1.2 +0.25/-0.20 Vp-p).

Note: Clear RF signal waveform means that the shape “◇” can be clearly distinguished at the center of the waveform.

Procedure:

1. Connect JW146 (ADJ) to JW145 (GND) and TP (TEI) to TP (VC) with lead wire.

2. Connect oscilloscope to test point TP (TE) on BD board. (TP (VC) is common/ground).

3. Turned Power switch on.

4. Put disc (YEDS-18) in and playback.

5. Confirm that the oscilloscope waveform (Traverse waveform) is symmetrical on the top and bottom in relation to 0V, and check this level: 2±1Vp-p.

6. Remove the lead wire connected in step 1.

Procedure:

1. Connect frequency counter to test point (PLCK) on Main board with lead wire.

2. Turned Power switch on.

3. Confirm that reading on frequency counter is 4.3218MHz.

System:

• Type: Compact disc digital audio system
• Laser: Semiconductor laser
• Wavelength: 780 – 790 nm

Performance:

• Frequency response: 2 Hz – 20 kHz (± 0.5 dB)
• Signal-to-noise ratio: More than 100 dB
• Dynamic range: More than 95 dB
• Harmonic distortion: Less than 0.007%
• Channel separation: More than 95 dB

System:

• Recording system: 4-track 2-channel stereo
• Bias: AC bias
• Head (x 1): Erasing F & F, Playback/Recording SD
• Motor: Capstan motor × 1 (DC servo motor), Reel motor × 1 (DC motor)
• Wow and flutter:

  ±0.14% W. Peak (IEC)

  0.08% W. RMS (NAB)

  ±0.19% W. Peak (DIN)

• Fast-winding time (approx.): 90 sec. (with Sony C-60 cassette)
• Frequency response (Dolby NR off):

  Type I tape, Sony Type I (NORMAL): 30 – 15,000 Hz (± 3 dB)

  Type II tape, Sony Type II (HIGH): 30 – 17,000 Hz (± 3 dB)

  Type IV tape, Sony Type IV (METAL): 30 – 18,000 Hz (±3 dB)

• Signal-to-noise ratio (at peak level, weighted, and with Dolby NR off):

  Type I tape, Sony Type I (NORMAL): 53 dB

  Type II tape, Sony Type II (HIGH): 57 dB

  Type IV tape, Sony Type IV (METAL): 57 dB

• S/N ratio improvement (Dolby NR on, Approximate values):

  B: 5 dB at 1 kHz, 10 dB at 5 kHz

  C: 15 dB at 500 Hz, 20 dB at 1 kHz

• Harmonic distortion:

  Type I tape, Sony Type I (NORMAL): 0.4% (160 nWb/m 315 Hz, 3rd H.D.)

  Type IV tape, Sony Type IV (METAL): 1.8% (250 nWb/m 315 Hz, 3rd H.D.)

Power requirements:

Power consumption: 23 W

Dimensions: 430 × 125 × 280 mm (w/h/d) (17 × 4 7/8 × 11 1/8 inches)

Mass (approx.): 4.5 kg (9 lb. 15 oz.)

Supplied accessories: Audio connecting cord (2 phono plugs – 2 phono plugs) (3)

Design and specifications are subject to change without notice.