Sony MZ-300 specifications Ver 1.1, Overall CD and MO adjustment method

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MZ-E300

Ver 1.1 2001.03

5Rewriting of the adjustment value.

1.After CD overall adjustment, switch to manual mode No. 321 in the condition the disc is in.

2.Press – key on the remote control unit to set 1 step down the adjustment value of No. 321, and press the pause key on the remote control unit to write this value to NV.

3.Press the >B key on the remote control unit to switch to manual mode No. 323.

4.Press the pause key on the remote control unit to set to the automatic adjustment.

During adjusting automatically, the adjustment value turns on and off, so wait for the time the adjustment value is on.

5.Press the >B key on the remote control unit to switch to manual mode No. 345.

6.Note down the current adjustment value of No. 345 (value X). Use the + and – keys on the remote control unit to set the adjustment value of No. 345 to the value (Y) determined by the formula below, and press the pause key on the remote control unit to write this value to NV.

Formula: X x 1.18 = Y

*Since X and Y are 2’sC, attention must be paid to codes. And the maximum value of Y must be 7Fh. (Never set it to the negative value.)

Example: Since X = 2Bh, Y = 2Bh x 1.18 = 33h

6Change the disc to MO overall adjustment disc (GA1 disc). Switch to manual mode No.114.

Press the pause key on the remotecontrol unit to set to the automatic adjustment.

After adjustment, pull out the battery from the set to turn off the power.

Then insert the battery again.

7MO overall adjustment.

Microprocessor Version 1.20 and higher

1Clear NV.

2Electric offset adjustment.

3CD overall adjustment.

4Rewriting of the adjustment value.

1.After CD overall adjustment, switch to manual mode No. 321 in the condition the disc is in.

2.Press – key on the remote control unit to set 1 step down the adjustment value of No. 321, and press the pause key on the remote control unit to write this value to NV.

3.Press the >B key on the remote control unit to switch to manual mode No. 323.

4.Press the pause key on the remote control unit to set to the automatic adjustment.

During adjusting automatically, the adjustment value turns on and off, so wait for the time the adjustment value is on.

5.Press the >B key on the remote control unit to switch to manual mode No. 345.

6.Note down the current adjustment value of No. 345 (value X). Use the + and – keys on the remote control unit to set the adjustment value of No. 345 to the value (Y) determined by the formula below, and press the pause key on the remote control unit to write this value to NV.

Formula: X x 1.18 = Y

*Since X and Y are 2’sC, attention must be paid to codes. And the maximum value of Y must be 7Fh. (Never set it to the negative value.)

Example: Since X = 2Bh, Y = 2Bh x 1.18 = 33h

5Change the disc to MO overall adjustment disc (GA1 disc). Switch to manual mode No.114.

Press the pause key on the remotecontrol unit to set to the automatic adjustment.

After adjustment, pull out the battery from the set to turn off the power.

Then insert the battery again.

6MO overall adjustment.

4-7-2. Overall CD and MO adjustment method

1.Set the TEST MODE and press VOL – key or . key to set the Overall Adjustment mode.

Main unit LCD display

ASS

2.Insert CD disc in the set, and press . key to set the Overall CD Adjustment mode.

Automatic adjustments are made.

Main unit LCD display

XXX:

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

YY:Adjustment Value

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

The NG item and “ng” alternately flash on the main unit LCD display.

XXX:

n

XXX:NG item No.

YY:Adjustment Value

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

Main unit LCD display

End:cd

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

Main unit LCD display

XXX:

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

YY:Adjustment Value

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Contents Specifications 873-064-13Section Servicing Note General LID ASSY, UPPER, Holder Assy DisassemblySection Mechanism DeckMain Board Optical PICK-UP AssySetting the Test Mode Section Test ModeHow to set the Test Mode How to release the Test Mode Manual ModeOperations when the Test Mode is set How to set the Manual modeNV Reset Overall Adjustment ModeTest Mode Overall adjustment mode structure Electrical offset adjustment methodDisplay segment check mode Overall CD and MO adjustment method Ver 1.1MZ-E300 Overall CD and MO adjustment items Overall offset adjustmentIC601 LC89642-8B-E Section DiagramsExplanation of IC Terminals Pin No Pin name DescriptionLrco AvssXIN FseqPCK VcvssSetkey XresetRmckey OpenclsswSLED1FCON ClvwconSLED1RCON SLED2RCONBlock Diagrams Main BoardPrinted Wiring Boards Main /2 Refer to page 24 for NotesSemiconductor Location2121 Schematic Diagram Main /3 IC B/D2323 Digital MZ-E300 IC Block Diagrams IC551 SC111257FCR2 IC901 XPC18A32FCR2 Section Exploded Views Main SectionMechanism Deck Section MT-MZE300-176 M902Section Electrical Parts List MainElect Chip Short Revision History Date Description of Revision