Sony MZ-E90 User Manual

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• Press and hold down  PLAY MODE  to hold the current display

while the key is being pressed.

When method 1 was used:

Turn off the power and open the solder bridge on TAP801 on the
main board.
Note: The solder should be removed clean.  The remaining

solder may make a short with the chassis and other part.

When method 2 was used:

Turn off the power.

• When entered in the TEST MODE, this set provides the Overall

Adjustment mode which allows CD and MO discs to be auto-
matically adjusted.  In the Overall Adjustment mode , the system
discriminates between CD and MO discs, performs adjustments
in sequence automatically, and displays the faulty location if any
fault is found.  In the Manual mode, selected adjustments can be
performed automatically.

• The attached remote control is used to operate the TEST MODE.

Unless otherwise specified in the text, the key means that on the
remote control.

To set the TEST MODE, two methods are available.
1 Solder bridge and short TAP801 (TEST) on the main board.

Then turn on the power.

2 In the normal mode, operate the keys on the set and those on the

remote control as specified below:
Turn on HOLD switch on the set.  Holding down x (STOP)
key on the set, press the keys on the remote control in the
following sequence:

 > N  t  > N  t  .  t  .  t  > N
t  .  t  > N  t  .  t  X  t  X

When the TEST MODE is entered, the system switches to the
display check mode within the TEST MODE.  From this mode, the
other Test modes can be accessed.
When the TEST MODE is set, the LCD repeats a cycle of the
following displays:

Remote control LCD

L501

C518

CN551

8

1

5

TP518

CN501

1

5

10

15

20

TAP801

TAP801

MAIN BOARD   (SIDE B)

888

u

004 V1.100

All on

All off

Microprocessor
version
display

Test Mode
(Display Check Mode)

Manual Mode

Servo Mode

Audio Mode

Power Mode

OP Alignment Mode

key

key

+

key

+

key

x

x

key

key

Overall Adjustment Mode