Pioneer-DCX33Z-cs-sm 电路图 维修手册.pdf
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1、CiD PIONEER Service cyyianual CIRCUIT DESCRIPTIONS REPAIR L I F / A C 4 0 0 V ) C430, C435 (0.01 /xF/1 50V) C431, C432 C101, C103. C110, C112, C 4 0 3 C 4 0 6 Cl 4 1 , Cl 4 2 C424 C117, C118, C128, IC121, Cl 2 2 , C130 Cl 19, Cl 20, C 4 1 1 , C413, C416, C426, C428 Cl 35, Cl 36 C412, C434 ACG1002 AC
2、G-190 ACH-249 CCCSL101 J 5 0 (CCDSL101 J50) CCCSL121J50 C E A S R 4 7 M 1 0 0 C E A S 0 1 0 M 5 0 C E A S 1 0 0 M 5 0 CEASR15M50 CEAS101 M 5 0 C102, C107, C 1 1 1 , C115, Cl 25, Cl 26, Cl 3 1 , Cl 32, Cl 37, Cl 38, C 4 0 1 , C402 C310, C317 CEAS2R2M50 C E A S 2 2 0 M 1 6 1 0 Mark Symbol a screwdrive
3、r into the motor adjustment slot. 30 C - X 3 3 Z C B K 10-2. ELECTRICAL ADJUSTMENTS Before com m encing any electrical adjustments, m ake sure the following checked/ completed. 1. A l l mechanical adjustments must have been completed 2. T h e heads must be clean a n d demagnetized. 3. O d B v = 1 V
4、during level measurements. 4. Use the specified tapes Tor each adjustment. Althougli test tapes have both A a n d B sides. only use side A where the label is attached. S T D - 3 3 1 B : P l a y b a c k adjustment S T D - 6 0 8 A : N O R M A L blank tape S T D - 6 2 0 : C r O : b l a n k tape S T D -
5、 6 1 0 : M E T A L blank tape 5. Prepare the following measuring equipment. A C millivoltmeter. audio generator, attenuator. oscilloscope. 6. Adjust both left a n d right channels unless otherwise specified. 7. A n d unless indicated otherwise. leave the D O L B Y N R switch in the O F F position. 8
6、. Let the set w a r m up for at least a few minutes before commencing adjustments. A n d before commencing the record/playback frequency response adjustent. let the set age for ihree to five minutes. 9. Always adjust the set in the given adjustments order I f the order is changed. proper adjustment
7、will nol be possible, and this may result in loss of performance. Adjustment Procedure 1. Head azimuth adjustment 2. Playback level adjustment 3. Recording/Playback frequency response 4. Recording level adjustment OtB 3 I 5 H Z . l e o n w b / m zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA t
8、os lOs . 1 0 5 f2.5 kHz lOkHZ 6|HZ 6 J k H l 4 k H I lzyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA boO H Fig. 10-2 Test tape STD-331B muo FWD azimuth adjustment screw REV azimuth adjustment screw Fig. 10-3 Head azimuth adjustment 31 C - X 3 3 Z C B K 1zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONM
9、LKJIHGFEDCBA. Head azimuth adjustment (Notel Do not select FWD and REV with the screwdriver bsing kept inserted. Procedure Tape selector Mode Input signal/test e Adjusting point Measuring point Adjustment value Remark 1 NORM PLAY (FWD) Play back 10kHz dB on test tape STD: ;B Head azimuth adjusting s
10、crew (Fig. 10-3) TPl (R) TP2 (L) Maximum playback signal level After completion, lock the screw 2 NORM PLAY (REV) Play back 10kHz dB on test tape STD: ;B Head azimuth adjusting screw (Fig. 10-3) TPl (R) TP2 (L) Maximum playback signal level After completion, lock the screw 2. Playback level adjustm
11、ent * Perform this adjustment precisely since this adjustment is Dcbensat ected by 0.5 B for edge eff at 12f eet. 3 Hz and 1 dE - 2 - 3 - 4 - 5 - 6 lo e 3 100 1 ! 5 2 50 315 5 0 0 Ih 2 k 4 k 6 3k 31 1 k 15 Fig. 10-5 Playback frequency response toierance zone 33 C - X 3 3 Z C B K Test tape S T D - 6
12、0 8 A Test tape S T D - 6 0 8 A DOLBY NR switch OFF DOLBY NR switch ON 6 . 5 . 4 3 . . 2 1 1 i 5 ! 4 1zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA 1 5 ! 2 1 1 . - 1 - 2 . - 3 - 4 1 - 5 1 - 6 . 40 6 3 100 125 2 5 0 3 5 5 0 0 11)zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA 2k 4k 6.3k l
13、Oh 12t( 15k -l - 2 1 - 3 ! - 4 1 1 - 5 1 1 - 6 1 4 0 6 j 1 1 1 1 w i 3 100 125 2 5 0 315 5 0 0 Ik 2k 4k 6.5k lOk 1?k ! * Fig. 10-6 Recording and playback frequency response toierance zone (NORM) Test tape STD-610 Test tape 3 1 0 DOLBY NR switch OFF DOLBY NR switch 6 5 4 1 3 1 2 ! 1 1 6 : , , 1 , j 1
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