Pioneer rt 1020 h service manual
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Extracted text from pioneer rt 1020 h service manual (Ocr-read)
Page 2
nT-1 OEOH/FU
CONTENTS
SPECIFICATIONS ........................................ 3
,7 2. PARTS IDENTIFICATION .................................. 5
3. CIRCUIT DESCRIPTION
3.1 Playback Circuit ..................................... 9
3.2 Recording Circuit .................................... 9
3.3 Oscillator Circuit .................................... 10
3.4 Control Circuit ...................................... 11
4. DISASSEMBLY
4.1 Back Covers ....................................... 15
4.2 Side Boards .........................
4.3 Amplifier Panel ..................................... 16
4.4 Mechanical Panel .................................... 16
fl 5. TROUBLE SHOOTING
'/ 5.1 Transport Mechanism and Control System (1) ................. 17
5.2 Transport Mechanism and Control System (2) ................. 18
5.3 Electronic Circuit Trouble .............................. 20
6. MECHANICAL ADJUSTMENTS
6.1 Reel Base Height Adjustment ........................... 23
6.2 Brake Adjustment .................................. 23
6.3 Take~up and Back Tension Torque Adjustment ............... 24
6.14 Pinch Roller Pressure Adjustment ........................ 25
7. TAPE HEAD ADJUSTMENTS
7.1 Course Adjustments ................................. 26
7.2 P.B. Head Adjustment ................................. 26
z" 7.3 REC. Head Adjustment ................................ 26
i 8. CIRCUIT ADJUSTMENTS
I 8.1 Playback Sensitivity Adjustment .......................... 27
8.2 Playback Equalizer Adjustment ........................... 27
8.3 Playback Frequency Response Confirmation .................. 27
8.4 Bias Oscillator Amplitude Adjustment ...................... 28
8.5 Bias-trap Adjustment ................................. 28
8.6 Recording Bias Adjustment .................
8.7 Erase Head Dummy Adjustment .......................... 28
8.8 Level Meter Calibration ................................ 28
8.9 Recording Sensitivity Adjustment ......................... 28
8.10 REC. and P.B. Frequency Response Adjustment ............... 29
9. SELECTION OF LINE FREQUENCY AND VOLTAGE
9.1 Selection of Line Frequency ............................. 30
9.2 Switching Line Voltage Setting and Fuse .................... 30