Sony MX-E501 KEY Check Mode, Sound Skip Check Result Display Mode, Eib, Outline of the function

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4-7. Sound Skip Check Result Display Mode

This set can display and check the error count occurring during play.

Setting method of Sound Skip Check Result Display Mode

1. Setting the test mode.

2. Pressing the > N key activates the sound skip check result display mode where the LCD displays as shown below.

LCD display

000P**R##

Total of record system error count

Total of play system error count

3.When > N key is pressed, the total of error count is displayed on the LCD, and each time the >N key is pressed, the error count descents one by one as shown below. Also, when

. key is pressed, the error count ascends one by one.

000P**R00

000 EIB **

000Stat**

000Adrs**

000BEmp**

000######

P**R00 : Total of play system error and record system error count

** : Sound skip check items counter (hexadecimal)

##### : 6-digit address (hexadecimal) where a sound skipped last

Error code

 

Cause of error

Description of error

 

 

 

Playback

EIB

Sound error correction error

 

 

 

 

Stat

Decorder status error

 

 

 

 

Adrs

Cannot access the address

 

 

 

 

BEmp

Buffer becomes empty

 

 

 

MZ-E501

4-8. KEY CHECK MODE

4-8-1. Outline of the function

This mode is used to check to make sure that each of the keys (including the slide switch) on the set operates normally.(The 1 kHz signal is outputted from the L and R channels of head phones)

4-8-2. Setting the Key Check mode

1.Set the TEST MODE. Press and hold down DISPLAY key (for more than 3 sec) to set the Key Check mode.

LCD display

0000F

2.When each key on the set and on remote control is pressed, its name is displayed on the LCD. (The operated position is displayed for 4 sec after the slide switch is operated. If any other key is pressed during this display, the LCD switches to its name display)

Example: When > N key on the set is pressed: LCD display

000 FF 0F

Example: When > N key on the remote control is pressed:

LCD display

000 rPLAY XX

XX: AD value of the remote control key (hexadecimal 00 to FF)

3.When all the keys on the set and on the remote control are considered as OK, the following displays are shown for 2 sec. (The key pressed to enter the Key Check mode has been checked even if it is not pressed in this mode)

Example: When the keys on the set are considered as OK: LCD display

888SET OK OF

Example: When the keys on the remote control are considered as OK:

LCD display

888 RMC OK OX

4.Press the x key to terminate the sound skip check result display mode and to return to the test mode. (Display check mode)

4.When all the key have been checked or when the top panel is opened during this checking, the system terminates the Key Check mode and return to the TEST MODE.

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Contents MZ-E501 SpecificationsExploded Views Table of ContentsDisassembly DiagramsSection Servicing Notes Location and Function of Controls Group Section GeneralCase ASSY, Holder Assy Section DisassemblyBracket Assy Mechanism DeckOptical PICK-UP Assy LCX-4E Main BoardGeneral Section Test ModeSetting the Test Mode How to set the Manual mode Manual ModeOverall Adjustment Mode Self-diagnostic mode SELF-DIAGNOSTIC Display ModeEIB KEY Check ModeSound Skip Check Result Display Mode Setting the Key Check modeReset NV Section Electrical AdjustmentsManual Power Adjustments Overall CD and MO adjustment method Vc PWM Duty H adjustment methodElectrical offset adjustment method Resume clear method Overall CD and MO adjustment itemsMZ-E501 Waveforms Section DiagramsMain Board Block DiagramSemiconductor Printed Wiring Board Main Section Side aSide B Printed Wiring Board Main Section Side BOprledgh MZ-E501 2222 IC301 TA2131FL EL IC Block DiagramsIC901 XPC18A32FCR2 IC PIN Function Description MIFVSS3 OprledglXtest OprledrlDSPVSS0 AVS2 AvssAPC DSPVDD0Spcv DSPVDD2DSPVSS1 SpcuVL PWM TEST1, TEST0SSB CLK MCUVSS0TSB SLV CHK LCD STBLCD RST REC LEDMain Section Section Exploded Views5961 Mechanism SectionSection Electrical Parts List MainXPC18A32FCR2 Ver 1.1 Memo MZ-E501 Before change After change How to distinguish the sets¥ Signal path Main Board Main Board + Line Tantalums Schematic Diagram Main /3 See page 9 for IC Block Diagrams IC Block Diagrams IC901 XPC18A32FCR2 Signal C input from the optical pick-up detector IC601 CXD2671-207GA System Control AVS2 Avss DSPVDD2 188,189 Not used open 190 LCD STB 1uF 10% C102 126-246-11 IC XPC18A32FCR2 SWITCH, Tactile VOL− Ver Date Description of Revision Revision History