Sony MZ-E505 service manual VlPWM, VbAD, Assy11, OfstOK, Cd Ok

Page 19

MZ-E505

5-4-3. VI PWM Duty adjustment

Connection:

5-5. OVERALL ADJUSTMENT MODE

5-5-1. Overall adjustment mode structure

digital voltmeter

MAIN board

TP904 (VL)

TP921 (GND)

Procedure:

1.Set the Manual mode and set the item No. to 764. LCD display

764 VlPWM XX

TEST MODE (Display Check Mode)

VOL

Overall Adjustment Title Display(ASSY**)

.

> N

CD overall

 

x key

Adjustment

 

 

 

 

 

 

 

 

 

 

 

 

 

> N

 

 

 

 

 

x key

 

 

MO overall

 

Adjustment

 

 

 

 

 

 

 

2.Connect a digital voltmeter to TP904 (VL) and TP921 (GND) on the main board and adjust VOL + (Voltage up) and VOL – (Voltage down) on the remote control.

Adjustment value:2.23V Standard value:2.22 to 2.235V

3.Press X key to write the adjustment value.

5-4-4. Vb A/D value check

1.Set the Manual mode and set the item No. to 731. LCD display

731 Vb_AD XX

2.Confirm the A/D value is 73 to 87 hex.

3.Confirm the power supply consumiption current is 120 mA or less.

5-4-5.Electrical offset adjustment method

Note: Doing adjustment by the state that a disc does not enter.

1.Confirm the power voltage is 1.5V.

2.Set to the test mode.

3.Turn the control towards VOL – activates the overall adjust- ment mode.

LCD display

000 Assy11

4.Press the DISPLAY key. LCD display

035 Ofst**

5.If result of electrical offset adjustment is OK,the following dis- play appears.

LCD display

000OfstOK

 

DISPLAY

key

Electrical offset

x key

 

 

 

 

 

 

 

 

key

Adjustment key

x key

 

 

 

 

 

 

 

 

PLAY MODE

Power Supply

 

 

 

 

 

 

 

 

Adjustment

 

 

 

 

 

 

 

 

Note: The overall adjustments should be always performed in the sequence of CD t MO adjustments.

5-5-2. Overall CD and MO adjustment method

1.Set the TEST MODE and turn the control towards VOL – to set the Overall Adjustment mode.

LCD display

000 Assy11

2.Insert CD disc in the set, and turn the control towards . to set the Overall CD Adjustment mode.

Automatic adjustments are made.

LCD display

XXXCD RUN

XXX:Item No. for which an adjustment is being executed.

3.If NG in the overall CD adjustments, return to Reset NV and perform from the electrical offset adjustment again.

LCD display

000XXX NG

XXX:NG item No.

4.If OK through the overall CD adjustments, then perform overall MO adjustments.

LCD display

000CD OK

5.Insert MO disc in the set, and turn the control towards > N to set the Overall MO Adjustment mode. Automatic adjustments are made.

LCD display

XXXMO RUN

XXX:Item No. for which an adjustment is being executed.

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Contents NEW SpecificationsLCX-4E Exploded Views Table of ContentsDisassembly DiagramsSection Servicing Notes Flexible Circuit Board RepairingSilver Blue Pink Violet General SectionDisassembly Flow Section DisassemblyCase Rear Battery Case LIDUpper Panel Section Main BoardHolder Assy Z Switch BoardMechanism Deck MT-MZE505-176 Bracket R Assy Bracket L AssyDC SSM18B Motor Spindle M901 Optical PICK-UP LCX-4EDC Motor Sled M902 Setting the Test Mode Section Test ModeGeneral 011 063B5E ManualXXXS5E OFEJ5E001 1 Adrs Overall Adjustment ModeSELF-DIAGNOSTIC Display Mode Self-diagnostic modeClearing the error display code 000 FF 0F 000 P**P##000 P**R00 000 EIB Stat Adrs BEmp 000 ###### 000 0FRes OK? ResetVclPWM Res NV CCOfst VlPWMVbAD Assy11ResClr MO OKNoClock 041 ResLED voltage check LED Voltage Adjustments071 Red35H 075 GRN35HVred High luminosity RED voltage value item No LED voltage adjustment Block Diagram Section DiagramsIC501 ed RF OUT WaveformsSemiconductor Location Printed Wiring Board Main board Component SideComponent Side IC551 Printed Wiring Board Main board Conductor Side1RT 1FT 1FF 1RF VI2 RMC Dtck IC301 TA2131FL EL IC Block DiagramsIC551 SC111258FCR2 XPC18A32FCR2 IC PIN Function Description SCK1 SCS1SI1 SO1Adrb AdioAVD2 AVS2Spcu SpdwDSPVDD2 DSPVSS1SSB CLK TEST1, TEST0EVA SSB DataREC OPR LED XCS LCDLCD STB OPR LED G HUpper PANEL, Case Rear Section Section Exploded ViewsOrnamental Belt Section 60 X-3381-109-1 Terminal Board ASSY, Battery306 308 307 305 304 303 302 301 Mechanism Deck Section MT-MZE505-176314 313 312 311 310Ceramic Chip Section Electrical Parts ListMain Main BOARD, Complete CapacitorFerrite ConnectorDiode Diode 1SS367-T3SONY Ferrite BeadSwitch Revision History

MZ-E505 specifications

The Sony MZ-E505 is a portable mini-disc player that emerged in the early 2000s as part of Sony's innovative move towards digital audio solutions. This compact device combines functionality, versatility, and cutting-edge technology, making it a popular choice among music enthusiasts. The MZ-E505 stands out due to its sleek design and impressive features, setting the standard for portable audio players of its time.

One of the main characteristics of the MZ-E505 is its lightweight design, weighing approximately 160 grams. Its portability is complemented by an elegant, user-friendly interface, which includes a simple set of buttons for easy navigation through tracks and folders. The device features a bright LCD display that shows essential information such as track number, time elapsed, and battery life, ensuring users remain informed while on the go.

The MZ-E505's standout feature is its mini-disc technology, allowing users to record and playback high-quality audio. Mini-discs, introduced by Sony in the 1990s, offer an advanced storage solution that can hold up to 74 minutes of high-fidelity stereo sound on the standard format. The player also supports LP2 and LP4 modes, enabling users to double or quadruple the recording capacity, which is perfect for those who require more space for their music collections.

In terms of sound quality, the MZ-E505 utilizes Sony’s ATRAC (Adaptive Transform Acoustic Coding) compression technology, which ensures that audio playback is clear and precise. The device is equipped with a 20-second shock protection mechanism to prevent interruptions during playback, giving users peace of mind while enjoying their favorite tracks during activities like jogging or commuting.

Battery life is another crucial aspect, and the MZ-E505 doesn’t disappoint. It features a rechargeable battery that can provide up to 10 hours of continuous playback on a full charge. Additionally, users have the option to utilize standard AA batteries as an alternative power source.

The MZ-E505 also incorporates a variety of connectivity options, including an analog line-in for direct recording from external sources. This feature was particularly appealing for audiophiles who wanted to create their mix compilations.

Overall, the Sony MZ-E505 is a remarkable blend of portability, sound quality, and innovative technology, representing the quintessential qualities of early digital audio devices. Although the mini-disc format has since been largely superseded by other digital technologies, the MZ-E505 remains a cherished piece of audio history, celebrated for its unique capabilities and breathtaking design.