Protection Of Eyes From Laser Beam During Servicing; Laser Warning Label; Service Procedures; Ref.no. - Onkyo FR-155 Service Manual

PROTECTION OF EYES FROM LASER BEAM DURING SERVICING

This set employs a laser. Therefore, be sure to follow carefully
the instructions below when servicing.
WARNING!!
SERVICE WARNING : DO NOT APPROACH THE
LASER EXIT WITH THE EYE TOO CLOSELY.
IN CASE IT IS NECESSARY TO CONFIRM LASER
BEAM EMISSION, BE SURE TO OBSERVE FROM
A DISTANCE OF MORE THAN 30cm FROM THE
SURFACE OF THE OBJECTIVE LENS ON THE
OPTICAL PICK-UP BLOCK.

LASER WARNING LABEL

The label shown below are affixed.
1. Warning label
SERVICE PROCEDURE
1. Replacing the fuses
This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.
Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.

REF.NO.

PART NO.
F901 252157
252083
NOTE : <DT> : 120 V model only
<GT> : 220 V~230 V model only
2. To initialize the unit
1. Press and the hold down the CD STOP button , then press the
STANDBY/ON button.
2. After " All lighting " is displayed, the preset memory and each
mode stored in the memory, are initialized and will return to the
factory settings.
3. Press the STANDBY/ON button.
4. Unplug the AC plug from the wall outlet.
DESCRIPTION
1.25A-UL/T-237, Fuse <DT>
0.4A-SE-EAW, Fuse <GT>
Laser Diode Properties
Material: GaAS/GaALAs
Wavelength: 780nm
Laser output: max. 0.5mW*
Emission Duration: continuous
*This output is the value measured at a distance about 1.8mm
from the objective lens surface on the Optical Pick-up Block.
2. Class 1 label
"CLASS 1 LASER
PRODUCT"
3. Safety-check out
(Only U.S.A. model)
After correcting the original service problem perform the
follwing safety check before releasing the set to the customer
Connect the insulating-resistance tester between the plug of
power supply cord and terminal GND on the back panel.
Specifications: More than 10Mohm at 500V
4. Memory Preservation
This unit does not require memory preservation batteries. A built-in
memory power back-up system preserves the contents of the
memory during power failures and even when the unit is un-plugged.
The unit must be plugged in order to charge the back-up
system.
The memory preservation period after the unit has been unplugged
varies depending on climate and placement of the unit. On the
average, memory contents are protected over a period of a few
weeks after the last time the unit has been unplugged. This period
is shorter when the unit is exposed to a highly humid climate.
5. Changing the AM band step
With the exception of the worldwide models, a tuning step selector
switch is not provided. When you change the band step, change
the parts as shown below.
To 10kHz
R748 open
R749 1 koms
R748 and R749 on the microprocessor PC board (NADG-6933)
3
FR-155
LUOKAN 1
LASERLAITE
KLASS 1
LASER APPARAT
To 9kHz
1 kohms
open