Kenwood LS-M31, Service Manual

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RXD-M31MD
8
CIRCUIT DESCRIPTION
(4) Basic operation in test mode.
The muting during mode selection is not controlled in the test mode.
The test mode is cancelled when the AC power is turned OFF.
(5) The operation of the keys in the test mode.
6-2 Test mode of DECK section
(1) Setting
While pressing the TAPE key(DECK), plug the AC power cord into an AC power outlet.
(2) Resetting
Disconnect the AC power cord from an AC power outlet or press the [ON/STANDBY] key.
(3) Operation in TEST mode
(a) Initial condition
Item Condition
Power ON
Selector TAPE
Main VOL. 0dB (VOL. 80)
Input level(AUX) -6dB(INPUT 0)
EX. bass OFF
FL, LED, LCD All the FLs, LEDs, and LCDs are turned on
(b) 4-sec REC
• If the REC key is pushed, the system record for 4sec. Then, it rewinds to the REC starting position and plays back auto-
matically.
• If the REC key is pushed during the 4-sec REC operation, the system records further for 4-sec, then returns to the start-
ing position of the first 4-sec REC operation and plays back.
SERECTOR
TUNER AUX
OPERATION KEY
MENU
NORMAL ACTIVITY
DISPLAY DISPLAY DISPLAY
VOLUME INPUT BALANCE
(VOLUME15) (INPUT 0 ) (CENTER)
4
P.CALL : DOWN VOLUME 1 INPUT-6(dB)
7
P.CALL : 10 STEP CHANGEOVER
VOLUME 40 INPUT 0 (dB)
10 20 30 40 01
¢
P.CALL : UP VOLUME 80 INPUT+3(dB)
REPEAT
EQU.MAX EQU.MINI EQU.FLAT
SOUND
S-LEVEL DISPLAY
(E.T only)
ATT OFF
ATT ON
NORMAL ACTIVITY
TUNER ATT OFF (NORMAL DISPLAY)
: S-LEVEL A/D VALUE(HEX)
DOT (DISPLAY) 1st figure 2nd figure 3rd figure 4th figure
MECHA. HALF FWD REC INHIBIT RVS REC INHIBIT CRO2(TYPE ¿ ) CASSETTE HALF
SWITCH DETECTION SW DETECTION SW DETECTION SW DETECTION SW
NG / / / /
OK T A P E
(c) Mechanism half switches indication
The mechanism half switches status are indicated "/ " or "TAPE" on the display as shown below.
-
-
-
6-3-1 Inspection mode
Setting : While pressing the [MD REC] Key, plug the AC power cord into an AC power outlet.
The "INSPECTION" shows on the display.
Cancellation : Unplug the AC power cord from an AC power outlet.
• The "DIGITAL1" is indicated on the display for a
second. "DIGITAL1" CD input
• Source indicator (MD) is turned ON.
• The "ANALOG" is indicated on the display for a
second.
• AUX input level MID
• Source indicator (MD) is turned ON .
2 Digital through SOUND
test mode
1 Analog through SOUND
test mode
No.
Contents of
Keys Operation & Indication RemarKs
TEST mode
SEL.
MD
(PAUSE)
CD
DIGITAL
SP
SEL.
MD
(PAUSE)
AUX IN
(ANALOG)
REC IN
SP
6-3 Test mode of MD player
1. Preparation for adjustment
Test disc
6-3-2 MD TEST mode for adjustment
Type Test disc
1 High reflection disc TGYS1 (SONY)
2 Low reflection disc Recording minidisc
3 Head Adjusting transparent
2. Test mode
Test mode setting method
1. While pressing the [MD PLAY] key, plug the AC power cord into the AC power outlet.
(Start from A if no disc load, C if disc load.)
A MD
STEP Display
Change to step D if press <MD STOP> key. Return to C if press <MD REC>key.
: MD microprocessor version.
* Repair service is available for AUTO pre-adjustment and AUTO adjustment only.
Press MD STOP key to cancel the test mode if in needless test modes.
B EJECT
C AUT YOBI
Entering the specific mode
Whenever the [MD REC] button is pressed, the mode is changed.
AUTO pre-adjustment AUTO adjustment RESULT SUB RESULT
EEPROM setting MANUAL adjustment MANUAL pre-adjustment
(AUT YOBI) (AUTO AJST) (RST YOBI) (RESULT)
(EEPROM SET) (MNU AJST) (MNU YOBI)
D tsm e : Test mode STOP state
• Canceling the test mode
When the POWER button is pressed, the test mode is canceled, and the POWER OFF state is set.
( ): Display