Akai UC-K2

Step
Adjustment
Test Tape
Mode
Adjustment
Result
Remarks
Item
Supply Signal
Point
Bias Filter 84 kHz from an FLI0l (RED)
Minimum AC
Refer to
15
REC
Voltmeter
adjustment oscillator FL201 (RED)
indication
NOTE 7.
MPX Filter
19 kHz Filter
19 kHz from an FLl0l (BLK)
Minimum AC
Switch to ON
16
REC
Voltmeter
(REAR Panel)
adjustment
oscillator
FL201 (BLK)
indication Refer to
NOTES 6, 7.
Chart-I
NOTES: 1. Dolby NR Switch to OFF Position.
2. Except for Step 16, set MPX Filter Switch to OFF Position.
3. Because each of these adjustments is vital to perfect Dolby NR circuit operation, ensure that they are
carried out with as few errors as possible.
4. Use the following cassette measuring tapes:
LN Tape TDK D C-60
LH Tape Maxell UD C-60
CrO
2
Tape TDK SA C-60
Metal Tape TDK MA-C C-60
5. If either the distortion factor or the high range frequency characteristics do or not satisfy the specifica-
tions, carry out adjustment items 5 to 14 while changing the amount of high range compensation with the
REC EQ coil (Ll0l to 104, L201 to 204).
6. Adjust the oscillator's frequency to give a frequency counter reading of 19.00 kHz.
7. Unless the core is moved unintentionally this adjustment is not necessary.
IX. CLASSIFICATION OF VARIOUS P.C BOARDS
1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS
P.C Board Title
P.C Board Number
Selector P.C Board
72-1851
LED P.C Board
72-1852
LED Ind. P.C Board 72-1853
REC/PB P.C Board 72-1864
OSC P .C Board
72-1865
Power Switch P.C Board
72-1873
Reed Switch P.C Board
72-1639
Chart-2
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