Kenwood KDC-305RG Service Manual page 5

KDC-305RG/3018R/3090R/A/G/YA/YG
MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin Function I/O Description
54 N.C O Not used
55 N.C O Not used
56 SW5 O SW 5V control
57 P ON O Microprocessor peripheral power supply control terminal
58 TYPE2 I Destination type input terminal 2
59 N.C O Not used
60 RESET I Reset input terminal
61 REMO I Data input from the remote control light sensor
62 R CLK I Clock input from RDS decoder
63 CH-REQC I Request input from changers
64 SW1 I Loading detection
65 KEY-REQ I Key request terminal
66 SW2 I 12cm disc detection terminal
67 VSS0 - Ground connection terminal
68 VDD1 - VDD connection terminal
69 X2 - Main clock resonator connection terminal
70 X1 I Main clock resonator connection terminal
71 IC(TEST) - Not used
72 XT2 - Sub clock resonator connection terminal
73 N.C I Sub clock resonator connection terminal
74 VDD0 - VDD connection terminal
75 AVREF0 I A/D converter reference voltage input
76 SMETER I S-meter input from the tuner pack
77 PHONE I PHONE detection input
78 NOISE I Noise detection input
79 TYPE0 I Destination type input terminal 0
80 TYPE1 I Destination type input terminal 1
Processing Operation
"Lo": POWER ON mode
"Hi": ACC ON or during CD Loading/Eject
"Lo": System reset
"Hi": Request
"Lo": CD chucking
"Lo": Request
"Lo": 12cm disc
connected to GND
connected to GND
N.C.
connected to BU5V lines
1V or less: TEL MUTE,2.5V or greater: NAVI MUTE
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KDC-305RG/3018R/3090R/A/G/YA/YG
ADJUSTMENT
Test Mode
1. How to enter test mode
While holding the FM key and preset 6 key, reset the unit.
All display segments light up when the test mode is entered.
2. How to exit from test mode
Reset the unit.
The test mode is not terminated by turning ACC off, power
off, momentary power down or panel detaching.
3. Test mode specifications of CD receiver
• Pressing the Track Up key jumps to tracks in the following
sequence:
No.9→No.15→No.10→No.11→No.12→No.13→No.14→No.9
(Repeats the cycle)
• Pressing the Track Down key jumps to the track
immediately before the track being played.
• Pressing Preset 1 key jumps to track No. 28.
• Forced ejection is not provided.
4. Test mode specifications of cassette receiver
• Blank skip (B.S) is off.
• Pressing the ATT key ejects the cassette.
5. Audio functions
• Pressing the AUDIO key or the OPEN/CLOSE key on the
remote controller initiates the Audio mode.
• In the Audio adjustment mode, the Seek Up/Down keys
on the remote controller can only be pressed shortly. (They
cannot be held depressed.)
• The volume is –10 dB (which is displayed as "30").
• LOUDNESS is OFF.
• The Bass/Treble Up/Down and Balance/Fader Up/Down
buttons function as full-boost/full-cut and full-front/full-rear
respectively.
6. Menu mode
• Pressing the CLK or the DNPP key on the remote controller
initiates the Menu mode.
• In the Menu mode, the Seek Up/Down keys on the remote
controller can only be pressed shortly . (They cannot be
held depressed.)
• With the models incorporating RDS, the first operation in
the menu becomes local seek.
7. Version and operating hours display
• The following table shows the key operations and resulting
display information.
Key Operation Display
Pressing Preset 1 Version (Date and time display)
Pressing Preset 3 CD (or TAPE with C/R models)
operating hours
Pressing Preset 5 CD (or TAPE with C/R models)
ejection count
• Holding Preset 3 while the operating hour information is
displayed clears it.
• Holding Preset 5 while the ejection count information is
displayed clears it.
Adjustment Mode
Adjustable items
1: Stereo Decoder Subaddress: 9
2: Configuration Subaddress: D
Default values
If they are not written in the EEPROM, the default values
specified by the IC developer are set in IC2-3.
Adjustment procedure
1: Enter the IC2-3 Adjustment mode by resetting the unit while
holding d + h.
2: Select the TUNER source by pressing SRC.
3: When the adjustment mode is entered, the display shows a
2-digit hex number.
4: When preset a or s is recalled, the setting values
corresponding to the pressed number are displayed. (The
displayed values are those in the RAM.)
5: Vary each setting value using 4 or ¢
6: Store the values in the corresponding preset number.
7: The settings can be performed individually for each item. (It
is not required to store all the values together.)
8: After storing the values, reset the unit to exit from the
adjustment mode. The values set in the EEPROM will be
read during the resetting.
9: When the band is switched, there may be cases in which
the preset number being displayed does not coincide with
the stored setting value. To check this , be sure to recall the
preset number after you switch the band.
Notes
1: The items which are not stored will be set to the default
values.
2: Once a value is stored in memory, the value will always be
used later.
(It is not allowed to modify the setting values by switching
the destination type.)
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