Akai UC-K2 Service Manual page 41

Adjustment
Test Tape
Mode
Adjustment
Result
Remarks
Step
Item
Supply Signal Point
Playback 333 Hz, 0 VU
Rl20 (L)
-5 .5 ± 0.5 dBm
Tape selector to
1 PB
R220 (R) (410 mV) LN. Level Test Tape
.
Bar Meter
1,000 Hz
R306 (L) OdB
2
Sensitivity -5 .5 dBm from
REC
R356 (R) indication
(0 dB) oscillator
Bar Meter 1,000 Hz
R305 (L) -20 dB
3
Sensitivity -25
.5
dBm from
REC
R355 (R) indication
( 20 dB) oscillator
4 Confirmation of Steps 2 and 3.
METAL
METAL Blank Tape
1,000 Hz to
Tape selector to Position 1,000 Hz, 10,000
REC/PB
R506 (L)
10,000 Hz
5
recording Hz -25.5 dBm
R510 (R)
METAL.
flat
Bias recording
•
CrO 2 Position
CrO 2 Blank Tape
1,000 Hz to
Tape selector to 1,000 Hz, 10,000 R505 (L)
10,000 Hz 6
recording
REC/PB
R509 (R) CrO 2
Hz -25 .5 dBm
flat
recording
LH Position
LH Blank Tape
1,000 Hz to
Tape selector to 1,000 Hz, 10,000 R504 (L)
10,000 Hz 7 recording
REC/PB
R508 (R) LH Hz -25.5 dBm
flat
Bias
recording
LN Position
LN Blank Tape
1,000 Hz to
Tape selector to
1,000 Hz, 10,000
R503 (L)
10,000 Hz
8 recording
REC/PB
R507 (R)
LN
Hz -25.5 dBm
flat Bias
recording
Confirmation LN,LH: 30 to 15,000 Hz ±3 dB
}s.efer to
-25.5 dBm
REC/PB
CrO2:
30 to 16,000 Hz ±3 dB 9 of Frequency
NOTE 5.
Response
recording
METAL: 30 to 18,000 Hz ±3 dB
•
METAL
1,000 Hz
Rl37 (L) -5 .5 ± 0.5 dBm
Tape selector to
Position
10 -5.5 dBm
REC/PB
R237 (R) (410 mV) Metal recording
recording
Level
CrO 2 Position 1,000 Hz
R138 (L) -5.5 ± 0.5 dBm Tape selector to
11 recording
-5.5 dBm
REC/PB
R238 (R)
(410 mV)
CrO2.
Level recording
LH
Position 1,000 Hz
R139 (L) -5.5 ± 0.5 dBm
Tape selector to
12 recording -5.5 dBm REC/PB
R239 (R) (410 mV) LH.
Level recording
LN Position
1,000 Hz
R140 (L) -5 .5 ± 0.5 dBm Tape selector to
13 recording
-5.5 dBm
REC/PB
R240 (R) (410 mV) LN.
Level recording
LN < 1.2%
Confirmation 1,000 Hz
LH
< 1.2% Refer to
14
of Distortion
-5.5 dBm
REC/PB
CrO2 < 1.5% NOTE 5.
Factor
recording
METAL< 1.5%
39