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SECTION 2
TEST MODE
FL DISPLAY/KEY LED TEST MODE
AGING MODE
Press the REPEAT, ENTER/NEXT and SURROUND buttons
1.
CD aging mode
simultaneously.
To execute the CD aging, set the three discs to the CD tray and
1.
All FL segments and all LEDs turn on.
set the function to CD. REPEAT, ENTER/NEXT and LOOP
2.
To access the microprocessor information, press the P FILE
buttons simultaneously. The CD aging mode starts and the disc
key. Each pressing of the P FILE key advances the display on
calendar starts blinking.
the FL tube in the following sequence.
2.
Tape aging mode
To execute the tape aging, set the two tapes to the tape A and B
STR microprocessor version number
drives. Set the function to TAPE. Press the REPEAT, ENTER/
NEXT and LOOP buttons simultaneously. Press the A forward
HCD microprocessor version number
key to start the tape aging mode. "AGING" appears on the
display.
VCD microprocessor version number (VCD model only)
CD SERVICE MODE
Model name
Turn on the main power. Press the REPEAT, ENTER/NEXT and
Destination
KARAOKE PON/MPX buttons simultaneously.
VACS toggles between ON and OFF.
3. To check the encoder, press the MUSIC key. The following
display appears on the FL tube.
"K
0
J
0
V
0"
VACS LEVEL DISPLAY
Turn on the main power. Press the EDIT, ENTER/NEXT and
The number after K indicates the number of times that the key is
KARAOKE PON/MPX buttons simultaneously.
pressed. The key which was pressed in the past, is not counted.
VACS level appears on the display.
The key which is pressed hereafter is counted. Pressing any key
increases the number after K.
CD SHIP MODE
The number after J indicates the number of rotations that the JOG
Turn on the main power. Press the PLAY MODE and POWER
dial is rotated. Turning the JOG dial clockwise increases the number
buttons simultaneously.
after J. Turning the JOG dial counter-clockwise decreases the
The main power is turned off and LOCK appears on the display.
number after J.
The number after V indicates the number of rotations that the
TUNER STEP CHANGE
VOLUME dial is rotated. Turning the VOLUME dial clockwise
Turn on the main power. Set the function to TUNER. Select MW
increases the number after V. Turning the VOLUME dial counter-
band from the present tuning.
clockwise decreases the number after V.
Turn off the main power. Press the ENTER/NEXT and POWER
buttons simultaneously. The main power is turned on and the
To exit this mode, perform the "Cold Reset" (reset clearing memory)
changed step appears on the display.
as described below.
MD/VIDEO 1 FUNCTION CHANGE
GENERAL TEST MODE
Press the FUNCTION and POWER buttons simultaneously while
(INCLUDING AMPLIFIER AND TUNER)
the main power is on. When the function is set to VIDEO 1, the
Press the REPEAT, ENTER/NEXT and CLOCK TIMER SET
function is changed to MD and MD appears on the display.
buttons simultaneously while the main power is on.
When the function is set to MD, the function is changed to VIDEO
1.
Sound volume display segment starts blinking.
1 and VIDEO 1 appears on the display.
2.
The tuning enters the PRESET mode.
3.
Rotating the VOLUME control clockwise increases the volume
level to maximum.
COLD RESET (Reset which clears memory.)
Rotating the VOLUME control counter-clockwise decreases
Press the REPEAT, ENTER/NEXT and DISPLAY buttons
the volume level to minimum.
simultaneously at any time. The system is reset while clearing
4.
Pressing the MUSIC key decreases the equalizer curve to
memory.
minimum and "EQ CHECK" appears on the display.
Pressing the MOVIE key increases the equalizer curve to
maximum.
HOT RESET
Pressing the GAME key makes the equalizer curve flat.
(Reset which does not clear memory.)
5.
Pressing any of the DBFB, GROOVE or SURROUND key
Press the REPEAT, ENTER/NEXT and TIMER SELECT buttons
disappears "EQ CHECK" on the display.
simultaneously at any time. The system is reset without clearing
memory.
To exit this mode, perform the "Cold Reset" (reset clearing memory)
as described below.
– 5 –
SECTION 3
ELECTRICAL ADJUSTMENTS
(AEP, UK, East European, CIS model)
Note: As a front-end (FE1) is difficult to repair if faulty, replace it
with new one.
AM Section Adjustment
Setting:
loop antenna
loop antenna
(Supplied accessories)
AM RF SSG
set
30% amplitude
modulation by
60 cm
AM ANTENNA
400 Hz signal
terminal (TM1)
Field strength dB ( µ V/m) =SSG output level dB ( µ V/m) –26 dB.
AM Tuned Level Adjustment
Adjustment Location:
Band: AM or MW
Procedure:
[TCB BOARD] (Component Side)
1.
Set the output of SSG so that the input level of the set becomes
55 dB.
2.
Tune the set to 999 kHz.
3.
Adjust RV41 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location : TCB board
FM Section Adjustment
Note: This adjustment should be performed after the AM Tuned
Level Adjustment due to the same adjustment element.
Setting:
FM RF stereo signal
generator
75 Ω coaxial
set
Carrier frequency : 98 MHz
Modulation
: AUDIO 1 kH, 75 kHz
FM ANTENNA terminal
deviation (100%)
(TM1) (75 Ω open)
FM Tuned Level Adjustment
Band: FM
Procedure:
1.
Supply a 25 dBµ 98 MHz signal from the ANTENNA terminal.
2.
Tune the set to 98 MHz.
3.
If the TUNED indicator does not light, adjust RV42 to the point
(moment) when the TUNED indicator will change from going
off to going on.
Adjustment Location: TCB board
– 6 –
(East European, CIS model)
FM Polar Adjustment
FM RF SSG
75 Ω coaxial
FM ANTENNA terminal
(75 Ω )
Connection 1:
Carrier frequency : 69 MHz
: 1mV (60dBµ) (at 75 Ω open)
Output level
Modulation
: AUDIO 1 kHZ, 10kHz deviation
AF OSC
FM RF SSG
75 Ω coaxial
IC41
RV41
Audio 31.25 kHz
external
modulation
terminal
Connection 2:
RV42
Carrier frequency : 69 MHz
TM1
: 1mV (60 dBµ) (at 75 Ω open)
Output level
Modulation
: AUDIO 31.25 kHZ, 10 kHz deviation
(EXTERNAL MODULATION)
FE1
Adjustment Location : (East European, CIS model)
[TCB BOARD] (Component Side)
RV41
AM tuned level
Adjustment
RV1701, TP1701
Sub carrier level
Adjustment
CT1701, L1701, TP1701
Sub carrier peak
Adjustment
Procedure :
1. Set the modulation of FM RF SSG to AUDIO 1 kHz, 10 kHz
deviation according to "Connection 1".
2. Tune the set to 69 MHZ.
3. Adjust the RV1702 so that the reading of frequency counter
connected to TP1702 becomes within 31.25 kHz ± 0.05
kHz.(VCO adjustment)
set
4. Then record the reading of the level meter connected to TP1701
5. Set the modulation of FM RF SSG to AUDIO 31.25 kHz, 10
kHz deviation according to "Connection 2".
6. Tune the set to 69 MHz.
7. Set the CT1701 to be mechanical center.
8. Adjust the L1701 so that the reading of the level meter connected
to TP1701 become maximum.
Then adjust the CT1701 so that the reading of the level meter
connected to TP1701 becomes maximum. (SUB CARRIER
PEAK Adjustment)
9. Adjust the RV1701 so that the level at the moment becomes
14dB higher value than the level recorded in step 4. (SUB
CARRIER LEVEL Adjustment)
set
FM ANTENNA terminal
(75 Ω )
RV41
TM1
RV42
FE1
FM tuned level
IC41
Adjustment
RV42
LEVEL METER
RV1701
+
–
L1701
CT1701
(FILTER) TP1701
FREQUENCY COUNTER
IC1701
TP1702
+
RV1702, TP1702
(VCO)
–
VCO Adjustment
RV1702
– 7 –
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