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Sony MZ-R37 specifications 35, 36, • Waveforms

Models: MZ-R37

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• Waveforms

6-6. SCHEMATIC DIAGRAM — MAIN SECTION (1/3) — • Refer to page 44 for IC Block Diagrams.

MZ-R37

• Waveforms

1	VOLT/DIV : 0.5V AC
	TIME/DIV : 1μsec
	1.0±0.3Vp-p
	IC501 #¥
2	VOLT/DIV : 0.1V AC
	TIME/DIV : 0.1msec
	Approx. 0.5Vp-p
	IC501 @»
3	VOLT/DIV : 1V AC
	TIME/DIV : 5msec
	2.8Vp-p
	13.4msec
	IC601 !Á
4	VOLT/DIV : 1V AC
	TIME/DIV : 20nsec
	2.6Vp-p
	22.5MHz
	IC601 !¦

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(Page 38)

(Page 38) (Page 38)

Note:

•All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums.

•All resistors are in Ω and 1/4 W or less unless otherwise specified.

•% : indicates tolerance.

Note:	Note:
The components identi-	Les composants identifiés par
fied by mark !or dotted	une marque !sont critiques
line with mark !are criti-	pour la sécurité.
cal for safety.	Ne les remplacer que par une
Replace only with part	piéce portant le numéro
number specified.	spécifié.

•A : B+ Line.

•Power voltage is dc 4.5 V and fed with regulated dc power supply from external power voltage jack.

•Voltage and waveforms are dc with respect to ground under no-signal conditions.

no mark : PB

( ) : REC

∗: Impossible to measure

•Voltages are taken with a VOM (Input impedance 10 MΩ). Voltage variations may be noted due to normal produc- tion tolerances.

•Waveforms are taken with a oscilloscope.

Voltage variations may be noted due to normal produc- tion tolerances.

•Circled numbers refer to waveforms.

•Signal path.

J : PB (digital)

c : REC (digital)

– 35 –

– 36 –

– 37 –

Image 27

Sony MZ-R37 specifications 35, 36, • Waveforms

Contents

E Model Australian Model Tourist Model SPECIFICATIONSMZ-R37 US Model Canadian Model AEP Model UK ModelPrecautions for Laser Diode Emission Check Precautions for Using Optical Pick-up KMS-280AOptical Pick-upflexible board DISASSEMBLY TABLE OF CONTENTSSELF-DIAGNOSTIC DIAGRAMS– 4 – SECTION 1 GENERAL2-5. SELF-DIAGNOSTICMODE SECTION SELF-DIAGNOSTIC2-2.TEST MODE SETTING 2-3.OPERATION IN TEST MODE SETTING• Description of History Codes – 6 –• Description of Error Indication Codes Problem3-2.PANEL SV ASSY, FRONT SECTION DISASSEMBLY– 7 – 3-1.PANEL, BOTTOM1 CN801 3-4.CONNECTOR– 8 – 3-3.LCD MODULE2 1.7x4.5, tapping – 9 –3-5.MAIN BOARD 3-6.PANEL SV ASSY, UPPER1 MD, step – 10 –3-7.CABINET SV ASSY 3-8.OP BLOCK ASSY• Location of the Flexible Board marked line Notes for Installation of the OP Block Assy– 11 – 3-9.HOLDER ASSY– 12 – 4-2.TEST MODE SETTINGXX XX SERVO SECTION 4 TEST MODEOA 000b4F 32 OF SERVO32 OF S-GAIN OA 000a4FXX XX MECHA XX XX AUDIO51CD-RUN XX XX POWER4-5.OVERALL ADJUSTMENT MODE ASSY MODE XXASSY-M4-6.HYBRID MODE, KEY CHECK MODE – 16 –MO TRAVERSE ADJUSTMENT SECTION ELECTRICAL ADJUSTMENTSPRECAUTIONS FOR ADJUSTMENT LASER POWER CHECKConnection – 18 –LOW REFLECTION CD TRAVERSE ADJUSTMENT CD TRAVERSE ADJUSTMENT– 19 – CD RF LEVEL CHECKRF waveform SECTION DIAGRAMS – 20 –6-1.IC PIN DESCRIPTIONS – 21 – • IC801 CXP740010 SYSTEM CONTROL – 22 –– 23 – – 25 – 6-2.BLOCK DIAGRAM — SERVO SECTION —Signal path MZ-R37– 29 – 6-4.BLOCK DIAGRAM — SYSTEM CONTROL SECTION —– 27 – – 28 –– 33 – 6-5.PRINTED WIRING BOARD– 31 – – 32 –• Waveforms – 35 –– 36 – – 37 –• Waveform – 38 –– 39 – – 40 –– 41 – – 42 –MZ-R37 – 44 – – 45 –– 46 – – 47 – IC761 BA6966FV-E2IC803 AK6420AM-E IC901 MPC18A35FTA 13 12 11 9 10 8 SECTION EXPLODED VIEWS– 49 – 7-1.PANEL SECTION 2 3 1469 66 – 50 –7-2.CABINET SV ASSY SECTION 52 62109 124 113 – 51 –7-3.MECHANISM DECK SECTION MT-MZR37-161 101 104 108 111– 52 – ELECTRICAL PARTS LISTSECTION MAINMAIN – 53 –MAIN – 54 –MAIN – 55 –9-926-952-12 MZ-R37 MAIN– 56 – Sony CorporationVer 1.2 1999. SERVICE MANUAL• ACCESSORIES & PACKING MATERIALS SUPPLEMENT-1Ver 1.3 1999. PRINTED WIRING BOARDSCHEMATIC DIAGRAM SUPPLEMENT-2SIDE A 1 A B CD E F G H Page D E F G H 2. PRINTED WIRING BOARD — US MODEL —SIDE A 1 A B CPage – 13 – • Difference of Schematic Diagram US ModelMZ-R37 – 12 –– 17 – 4. SCHEMATIC DIAGRAM — MAIN SECTION 2/3 —MZ-R37 – 15 –– 20 – 5. SCHEMATIC DIAGRAM — MAIN SECTION 3/3 —MZ-R37 – 19 –6. ELECTRICAL PARTS LIST MAIN– 21 – MAIN – 22 –Ref. No MAIN – 23 –Ref. No MAIN – 24 –Part No MAIN – 25 –Part No CORRECT • ELECTRICAL PARTS LIST/MISCELLANEOUS7. Corrections • EXPLODED VIEWS INCORRECT