Test Mode / Adjustment - Kenwood KRC-20SA Service Manual

TEST MODE
1. How to enter the test mode
• Reset the unit while holding the FM key and preset 6 key.
• All indication segments go ON at the beginning of the test
mode.
2. How to release the test mode
• Simply reset the unit.
• (NOTE) The test mode is not canceled by ACC OFF,
power OFF, momentary power down or the panel off.
ADJUSTMENT
Set the controls and switches as follows.
BALANCE : center position
FADER : center position
No. ITEM TAPE
CASSETTE DECK SECTION
HEAD
SCC-1659
[1]
HEIGHT
HEAD TCC-153
[2]
AZIMUTH 10kHz
(2-LINE TAPE)
B
A
(FWD)
B
A
(RVS)

TEST MODE / ADJUSTMENT

BASS : center position LOUDNESS : OFF
TREBLE : center position
OUTPUT RECIEVER
SETTINGS SETTINGS
-
TAPE PLAY
Connect an AC
voltmeter and
TAPE PLAY
oscilloscope to
SP outputs.
TAPE SPEED
KRC-20SA/G
3. Audio adjustment
• Set the volume level to -10dB (which is shown as "30" on
the display).
• Loudness OFF.
• The BASS / TREBLE and BALANCE / FADER controls
can be set to the full boost / full cut and full right / full left
and full front / full rear respectively by pressing the Track
Up / Track Down keys.
• Sound coordination doesn't appear for the Audio mode
feed.
ALIGNMENT
POINTS
1) During FWD transport adjust ⁄
of 2-LINE TAPE passes through the center of the
head shield plate (core center area)
2) During RVS transport adjust ⁄
Head
of 2-LINE TAPE passes through the center of the
Height
head shield plate (core center area)
Screw
3) After the alignment above, reverse the transport
direction and check the FWD alignment again. If it
is deviated, perform alignment again. (Tape used :
SCC-1659, manufactured by A-BEX)
Head
Adjust the azimuth for each L ch/R ch or FWD/RVS
Azimuth
becomes maximum.
Screw
HEIGHT '
F
(FWD)
F
HEIGHT/AZIMUTH
(FWD)
ALIGN FOR
and ⁄ ' so that line A
F F
and ⁄ ' so that line B
R R
'
HEIGHT
R
(RVS)
HEIGHT/AZIMUTH
R
(RVS)
7