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Good scan of the original service manual. All schematics and adjustment procedures are there. It helped me to fix a long lasting problem with the tracking circuitry. The manual also includes the supplementals 1,2 and 3. Included are; electrical schematic's , pcb layout's, mechanical drawing's and exploded views, disassembly manual and maintenance procedures. 236 pages.
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The Service Manual received was helpful. The electronic information is exactly what I needed.
I recomend all of my friends about this technical page.
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High quality scan of service manual. I am satisfied!
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Excellent copies.
I will use "Owner Manual" again a second time.
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Very good manual for Technics SL 303. Manuale molto utile.
IC DESCRIPTION IC, LC78622E
Pin No. 1 2 3 4 5 6 7 8 9 10 11
12, 13
Pin Name DEFI TAI PDO Vvss ISET VVDD FR Vss EFMO EFMIN TEST2 CLV+, CLK� VIP HFL TES TOFF TGL JP+, JP� PCK FSEQ VDD
I/o I I o � For PLL. I � I � o I I 0 o I I o o 0 o o
Description Defect sense signal (DEF) input pin. (Connect to OVwhen notused). Testsignalinput pinwithbuilt%pull-dow nresistor. esureto connecttoOV. B
Phase comparator output pin to control external VCO. GNDpinfor built-in VCO. Besureto connect toOV. Pin to which external resistor adjusting the PDO output current. Power supply pin for built-in VCO. Pin for VCO frequency range adjustment. Digital system GND. Besureto connect toOV. For slice leyel control. EFM signal output pin. EFM signal input pin. Test signal input pin with built-in pull-down resistor. Be
sure to connect to OV.
Disc motor control output. Three level output is possible using command. Rough servo or phase control automatic selection monitoring output pin. Rough servo at H. Phase servo at L.
14 15 16 17 18 19,20 21 22 23
Track detect signal input pin. Schmidt input. Tracking error signal input pin. Schmidt input. Tracking OFF output pin. Tracking gain selection output pin. Gain boost at L. Track jump control signal output pin. Three level output is possible using command. EFM data playback clock monitoring pin 4.3218 MHz when phase is locked in. Sync signal detection output pin. H when the sync signal which is detected from EFM signal and thesync signal which is internally generated agree. Digital system power supply pin. The pin is controlled by the serial data command from microprocessor. When
24-28
CONT1-CONT5
I/o
General purpose input/output pin 1 to 5.
the pin is not used, set the pinto the input terminal and connect to OV,or alternately set the pin to output terminal and leave the pin open.
29
30
EMPH
C2F
o
o
De-emphasis monitor output pin. De-emphasis disc is being played back at H.
C2 flag output pin.
31 32,33 34 35 36 37 38
39
DOUT TEST3, TEST4 N.C. MUTEL LVDD LCHO LVSS RVSS RCHO RVDD MUTER
o I
DIGITAL OUT output pin. (EIAJ format). Test signal input pin with built-in pull-down resistor. Be sure to connect to OV. Not used. Set the pin to open.
o � L-channel 1-bit DAC. o �
L-channel mute output pin. L-channel power supply pin. L-channel output pin. L-channel GND. Be sure to connect to OV. R-channel GND. Be
sure to connect to OV.
I
40
o � o
41 42
R-channel l-bit DAC.
R-channel output pin. R-channel power supply pin. R-channel mute output pin.
 $4.99 CSDEL50 AIWA
Owner's Manual Complete owner's manual in digital format. The manual will be available for download as PDF file aft…
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