Sony MT-MZR70-165, MZ-R90/R91 service manual Key Check Mode

Page 19

4-7. KEY CHECK MODE

This set can check if the set and remote commander function nor- mally.

• Setting Method of Key Check Mode

1.Setting the test mode. (See page 13)

2.Press the [T MARK] or [DISPLAY] key on the remote com- mander for several seconds activates the key check mode where all segments of LCD turn OFF. (At the last two digits of DOT section, AD value of remote commander key line is displayed in hexadecimal)

3.When each key is pressed, it is displayed on the LCD, imply- ing that it was successfully checked as shown below. How- ever, for the slide switch on the set, it is not checked unless it is reciprocated.

*The key pressed to enter the key check mode was already checked at that time.

Set key

Key

Indication

N

PLAY

>

FF

.

FR

X

PAUSE

VOL +

VOL +

VOL –

VOL –

 

 

x

STOP

REC

REC

 

 

END SEARCH

END S

 

 

MENU .

JOG+

MENU >

JOG–

 

 

ENTER

PUSH

T MARK

T MARK

HOLD (hold)

HLDon

HOLD (off)

HLDoff

SYNCHRO REC (on)

SYCon

SYNCHRO REC (off)

SYCoff

Remote commander key

Key

Indication

 

 

 

 

N/>

rPLAY

.

 

rFR

 

 

 

 

X

rPAUSE

VOL +

rVOL +

VOL –

rVOL –

x

rSTOP

PLAYMODE

rPMODE

DISPLAY

 

rDISP

HOLD (hold)

 

 

 

 

 

 

 

 

 

 

HOLD (off)

 

 

 

 

 

 

4.The test mode (display check mode) is automatically activated when all keys on the set and remote commander were checked (see above). Also, the test mode (display check mode) gets back if opening the upper panel during a key check.

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Contents UK Model US ModelCanadian Model AEP ModelNotes on chip component replacement Flexible Circuit Board RepairingTABLE OF CONTENTS OPTICAL PICK-UPFLEXIBLE BOARD SECTION SERVICING NOTENOTES ON LASER DIODE EMISSION CHECK NOTES ON HANDLING THE OPTICAL PICK-UPBLOCK LCX-2RSECTION 2 GENERAL Page Page SECTION DISASSEMBLY 3-4.MAIN BOARD 3-3.LCD MODULE3-5.MD MECHANISM DECK MT-MZR70-165 3-6.SERVICE ASSY, OPover write head section 3-8.MOTOR FLEXIBLE BOARD 3-7.HOLDER ASSY3-10.“MOTOR, DC M601”, “MOTOR, DC M603” 3-9.MOTOR, DC M602888xxxxxxxxxFREC1SHUF SECTION 4 TEST MODE4-2-2.Operation in Setting the Test Mode 4-2-1.Setting Method of Test Mode000M a n u a l 011 0 5 9 A 011 C 6 8 S011 0 F FJ 011 0 6 3 B000P * * R 000B O v r 000B f u l 000R t r y 000P * * RE I B 000S t a t 000A d r s 000B E m p 000# # # # # #000R # # # # 0001 s t0001 s t 0001 s t 0001 s t 000N - 1 000N - 1 000N - 2 000N - 2 000N• Description of Indication History Description of Error Indication Codes4-7.KEY CHECK MODE 021R e s SECTION ELECTRICAL ADJUSTMENTS021R e s N 021R e s O K ?766V r h V c h 762V c l P W M765V c h P W M 763V r h V c l341 C D O K 014S e t T m p000 A s s y C D R U NCheck Method 043R e s u m e043R e s C l r ConnectionConnecting Location MZ-R70 DIAGRAMSSECTION MZ-R70 MZ-R70 6-3.BLOCK DIAGRAM - POWER SUPPLY SECTIONWaveforms Page Page MZ-R70 Refer to page 41 for IC Block DiagramsMZ-R70 MZ-R70 NJM2173 IC501SN761056 IC302MPC18A21MTB IC601MPC17A56FTA IC603IC301 IC901 MPC18A31FTAAK4517-VQ-L 6-9.IC PIN DESCRIPTIONS MAIN BOARD IC502 CXD2660GA Page Page Page Page Page SECTION EXPLODED VIEWS Page MAIN SECTION ELECTRICAL PARTS LISTMAIN MAIN MAIN MAIN Published by General Engineering Dept Sony CorporationMZ-R70 Personal Audio Division CompanySubject Taiwan model Addition US Model Canadian Model AEP Model UK ModelE Model Australian Model Chinese Model Ver