Sony CDP-CE575 Electrical Adjustments, Curve Check, Rfdc Level Check, Rfac Level Check

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CDP-CE575

Ver 1.1 2001.07SECTION 6

ELECTRICAL ADJUSTMENTS

Note:

1.CD Block is basically designed to operate without adjustment. There- fore, check each item in order given.

2.Use PATD-012 disc (4-225-203-01) unless otherwise indicated.

3.Use an oscilloscope with more than 10MΩ impedance.

4.Clean the object lens by an applicator with neutral detergent when the signal level is low than specified value with the following checks.

S Curve Check

Connection:

oscilloscope

BD board

TP (FE1) +

TP (VC) –

Procedure:

1.Set the test disc (PATD-012). Disc chucking operation is complete, then press the [POWER] button to turn the power off.

2.Connect an oscilloscope to test point TP (FE1) and TP (VC) on the BD board.

3.Connect between test point TP (ADJ) on the MAIN board and GND by lead wire.

4.Press the [POWER] button to turn the power on and enter the ADJ mode.

Then playback the number two track automatically, press the x button to stop the playback.

5.Press the [CHECK] button actuate the focus search. (actuate the focus search when disc table is moving in and out)

6.Check the oscilloscope waveform (S-curve) is symmetrical between A and B. And confirm peak to peak level within 2 ± 1 Vp-p.

S-curve waveform

symmetry

A

within 2 ± 1 Vp-p

B

Note: • Try to measure several times to make sure than the ratio of A : B or B : A is more than 10 : 7.

•Take sweep time as long as possible and light up the brightness to obtain best waveform.

Checking Location: BD board

RFDC Level Check

Connection:

oscilloscope

BD board

 

TP (RFDC)

+

TP (VC)

–

Procedure:

1.Set the test disc (PATD-012). Disc chucking operation is complete, then press the [POWER] button to turn the power off.

2.Connect an oscilloscope to test point TP (RFDC) and TP (VC) on the BD board.

3.Connect between test point TP (ADJ) on the MAIN board and GND by lead wire.

4.Press the [POWER] button to turn the power on and enter the ADJ mode, then playback the number two track automatically.

5.Confirm that oscilloscope waveform is clear and check the level

of between RFDC top and VC is correct or not.

Note: A clear RFDC signal waveform means that the shape “◊ ” can be clearly distinguished at the center of the waveform.

RFDC signal waveform

VOLT/DIV: 200 mV

TIME/DIV: 500 ns

level: 1.15 ± 0.35 Vp-p

VC

Checking Location: BD board

RFAC Level Check

Connection:

oscilloscope

BD board

 

TP (RFAC)

+

TP (VC)

–

Procedure:

1.Set the test disc (PATD-012). Disc chucking operation is complete, then press the [POWER] button to turn the power off.

2.Connect an oscilloscope to test point TP (RFAC) and TP (VC) on the BD board.

3.Connect between test point TP (ADJ) on the MAIN board and GND by lead wire.

4.Press the [POWER] button to turn the power on and enter the ADJ mode, then playback the number two track automatically.

5.Confirm that oscilloscope waveform is clear and check RFAC

signal level is correct or not.

Note: A clear RFAC signal waveform means that the shape “◊ ” can be clearly distinguished at the center of the waveform.

RFAC signal waveform

VOLT/DIV: 200 mV

TIME/DIV: 500 ns

level: 1.35 ± 0.4 Vp-p

Checking Location: BD board

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Contents Specifications 929-586-12NEW Diagrams Table of ContentsDisassembly CDP-CE575CDP-CE575 Section Servicing Notes HOW to Open the Disc Table When Power Switch Turns OFFFlexible Circuit Board Repairing ModelChecking Method Shipment ModeCD-TEXT Test Disc Restrictions in CD-TEXT DisplayÚ Û Ü Y ˙ 21h to 27h1kHz 0dB L&RD0h to C7h Áà â ã ä å æ çFront Panel CDP-CE575 Section GeneralRemote Control CDP-CE575 Section Disassembly Disassembly FlowFront Panel Section CD Mechanism Deck CDM59-5BD27 Main BoardBase Unit BU-5BD27 Table AssySensor Board Loading Motor BoardCDP-CE575 Section Assembly Adjusting Phase of Swing Gear and Gear U/DFluorescent Indicator TUBE, LED ALL LIT, and KEY Check Mode CDP-CE575 Section Test ModeADJ Mode ADJ Mode Special Function TableButtons and Corresponding Button Numbers Button Button Number or DisplayAging Mode Code No Status All mode Disc table Loading ModeMechanism Deck Check Mode Disc Table ModeLoading Mode Rfdc Level Check Electrical AdjustmentsCurve Check Rfac Level CheckBalance Check Memo Section Diagrams CDP-CE575 Circuit Boards LocationConductor Side Pattern face are indicated Parts face side Conductor Side See page 21 for Circuit Boards LocationSemiconductor Location Ref. No. Location IC101 IC131 IC150 Q131 Q132TP Rfdc Table Sensor CDP-CE575 Schematic Diagram Main /2 See page 32 for Waveform Schematic Diagram Main /2 Main Board Headphone BoardIC Block Diagrams BD Board Junction BoardDisplay Board IC802Keya Board Schematic Diagram Display Section See page 32 for Waveform IC PIN Function Description DescriptionPin No Pin Name Description Main Board IC301 CXP84648-085Q System Controller XLT Section Exploded Views Case SectionScrew +BVTP 3X8 TYPE2 N-S Not supplied Supplied with headphone board J881 Chassis Section 101 102506 510 553 551 BU, Table Address DetectBase Unit Section BU-5BD27 609 601CDP-CE575 Section Electrical Parts List CDP-CE575 BD Display CDP-CE575 Display Headphone Junction Loading Motor Main KEY a KEY BGround Terminal EB601 1-537-770-21 Terminal BOARD, Ground CDP-CE575 MainDiode InductorCDP-CE575 Main Power SW SensorAccessories & Packing Materials ENCODER, Rotary BU, Table Address DetectItalian , Portuguese AEP Revision History

CDP-CE575 specifications

The Sony CDP-CE575 is an exemplar of a high-quality CD player that combines classic design with advanced technology, making it a worthy addition to any audio enthusiast's collection. Launched in the 1990s, this piece of equipment showcases Sony's commitment to outstanding sound reproduction and user-friendly features.

One of the defining features of the CDP-CE575 is its capability to play standard CDs, alongside CD-R and CD-RW discs. This versatility allows users to enjoy a broad range of audio formats, catering to both classic disc collections and customized compilations. Additionally, the player supports a 5-disc carousel, enabling seamless transitions between multiple CDs, fostering an uninterrupted listening experience.

In terms of sound quality, the CDP-CE575 employs a high-precision digital-to-analog converter (DAC), which significantly enhances audio fidelity. This technology ensures that the subtleties in recordings are faithfully reproduced, resulting in a rich and nuanced listening experience. The unit's frequency response and overall dynamic range are optimized to deliver crystal-clear sound across various genres, from classical orchestras to contemporary rock.

The CDP-CE575 incorporates several user-centric features that enhance its practicality. One noteworthy characteristic is its Remote Control capability, providing the convenience of operating the device from a distance. The player also includes a programmable memory which allows users to arrange the order of tracks as per their preference, making custom playlists an effortless endeavor.

Moreover, the CDP-CE575 showcases a well-engineered display panel that presents vital information at a glance, ensuring that users remain in control of their auditory journey. The unit's compact and sturdy design also makes it suitable for various setups, whether for home use or more professional environments.

In conclusion, the Sony CDP-CE575 stands out as a compelling choice for anyone seeking a reliable and high-quality CD player. With its combination of advanced technologies, user-friendly features, and a focus on audio fidelity, this model epitomizes Sony’s innovative spirit in the realm of home audio. Its legacy continues to resonate with audiophiles who appreciate the art of CD listening, making it a noteworthy candidate for those seeking both functionality and performance in their audio equipment.
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