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Sony MZ-R37 specifications 19, Cd Rf Level Check, RF waveform

Models: MZ-R37

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Page 19

CD RF LEVEL CHECK

CD RF LEVEL CHECK

Connection :

oscilloscope

MAIN board

AP538 (RF)

AP503 (VC)

digital voltmeter

MAIN board

AP5117 (VCC)

AP574 (LDIO)

Adjustment Method :

1.Set the servo mode of the test mode (Mode : 000).

2.Press the ( key, and set the CD test adjustment mode (Mode : 050) using the VOLUME + or – key.

3.Press the =or + key and move the optical pick-up to the center circumference.

4.Insert a test CD (TDYS-1).

5.When the ( key is pressed, the CD EF balance adjustment mode (Mode : 052) will be set after CD focus search adjust- ment mode (Mode : 051).

6.When the ( key is pressed, the CD ABCD level adjustment mode (Mode : 053) is set.

7.Press the P key to perform automatic adjustment, and check that the RF level is 1.1 ± 0.33 Vp-p.

(RF waveform)

1.1 ± 0.33 Vp-p

8.Check that the voltage between AP5117 (VCC) and AP574 (LDIO) and at this time is below 40 mV.

9.Press the p key.

10.Exit the test mode.

Adjustment Location :

MAIN BOARD (SIDE B)
	IC701
	AP538 (RF)
	AP574 (LDIO)
	IC501
	AP503 (VC)
CN501	AP5117 (VCC)
CN501
	IC901

MAIN BOARD (SIDE A)

SP526 (TE)

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Image 19

Sony MZ-R37 specifications 19, Cd Rf Level Check, RF waveform

Contents

E Model Australian Model Tourist Model SPECIFICATIONSMZ-R37 US Model Canadian Model AEP Model UK ModelPrecautions for Using Optical Pick-up KMS-280A Precautions for Laser Diode Emission CheckOptical 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 ADJUSTMENTCD RF LEVEL CHECK – 19 –RF waveform – 20 – SECTION DIAGRAMS6-1.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 –– 42 – – 41 –MZ-R37 – 45 – – 44 –– 46 – IC761 BA6966FV-E2 – 47 –IC803 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-21 A B C SIDE AD 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 –MAIN 6. ELECTRICAL PARTS LIST– 21 – – 22 – MAINRef. No – 23 – MAINRef. No – 24 – MAINPart No – 25 – MAINPart No CORRECT • ELECTRICAL PARTS LIST/MISCELLANEOUS7. Corrections • EXPLODED VIEWS INCORRECT