Performance Specifications - Akai QX-D3305 Service Manual

PERFORMANCE SPECIFICATIONS

GENERAL TEST CONDITION
Power Supply : AC 230V 50Hz
Output Load : 4 ohm non-reactive
Reference Output : 500 mW, 4 ohm
Input Signal Source : External AM Loop Antenna
75 ohm Dummy for FM
Modulation : 30% 400Hz for AM 80% for Power
75kHz Deviation 1000Hz for FM
1kHz, 750mV @ Aux Input
Remarks : 7.5kHz Pilot Tone
40kHz L+R 1000Hz
CD SECTION
TEST ITEMS
1. 10% Dis. Output Power (1kHz, 0dB)
2. Frequency Response (100Hz-20kHz/1kHz, 0dB)
3. De-emphasis Response (1kHz, 0dB/5K, -5dB/16kHz, -9dB)
4. Channel Balance (1kHz, 0dB)
*5. Channel Separation (1kHz, 0dB)
*6. T.H.D. + Noise (1kHz, 0dB)
*7. S/N Ratio (1HF-A) (1kHz, 0dB)
8. CD Speed (1000Hz)
*9. Dynamic Range
10. Wedge
11. Black Dot
12. Fringer Print
13. Eccentricity
14. Vertical Deviation
15. Seaching Time
16. Minimum Operation Voltage
17. CD Max. Vol. Hum
*with external "A" CURE L.P.F.
ITEM 1 - 9 Test Disc "CBD SONY YEDS7"
ITEM 10 - 12 Test Disc "PHILIPS 444A"
ITEM 15 Test Disc "PHILIPS 444"
Level Matching
Aux 750 mV
AM 55% 5mV
FM 40kHz 1mV
CD -10dB
MTT-112N
UNIT NOMINAL LIMIT
W 5
dB ±1
dB ±2
dB 1
dB 45
% 0.3
dB 60
Hz -
dB 80
µm -
µm 800
Track - No. 18
TCD-712 ABEX µm -
TCD-731R ABEX mm -
TN01-TN024 Sec. 5
TN024-TN01 Sec. 5
% 85
mV 5
dB
dB
dB -6
dB
1
AM SECTION, AMPLITUDE MODULATION
1. Tuning Range
2. I. F.
3. S/N 10mV/m
4. Sens. (at S/N 20dB)
5. I. F. Rejection
6. Image Rejection
7. Spurious Rejection
8. Bandwidth, -6 dB, at
(Max. Sens. +6 dB)
9. ACA (±9 kHz) Input
10. AGC Figure Merit
11. Distortion, 5mV/m, 30%
12. 10% THD Power AC
13. a. Tweet (2nd 900kHz & 3rd 1350kHz)
at 75 dB I/P
14. Audio Fidelity, Centre ± (6) dB
15. Low Voltage AC
4.5
16. a. Mod. Hum 10mV/m
±6
b. Hum at Min. Vol.
±4
17. Auto Stop Sens.
2
18. Step Frequency
40
1.0
55
±1
70
CASSETTE SECTION
600
600
A (PLAYBACK)
1. Tape Speed (MTT-111N)
150
2. Wow & Flutter JIS WTD (MTT-111N)
>0.8
3. Take Up Torque (PLAY)
8
4. F. F. / Rew. Torque
8
5. Output Power (MTT-112BN) 10% THD
90
6. S/N Ratio (MTT-112BN)
10
7. T. H. Distortion (MTT-112BN)
8. Frequency Response (MTT-257H)
9. Separation (MTT-141N) w/BPF
10. Cross Talk (X- BASS OFF) w/BPF (MTT-121N)
11. Hum & Noise VR MAX
B (RECORD)
1. T. H. / Distortion
±3
2. Erase Ratio Effect (MTT-112BN) for Level
±3
3. Rec. / Playback Level Difference (Radio)
±3
4. Rec. / Play S/N Ratio (with A Filter)
±3
5. Frequency Response (MTT-257)
(Ref: 1kHz 0dB)
Remarks:
All measurement should be done in Bypass mode without X-Bass/Tone...effect.
PERFORMANCE SPECIFICATIONS - CONTINUED
TEST ITEMS
80%
TEST ITEMS
VR MIN
2
UNIT NOMINAL LIMIT
kHz 522-1620 -
kHz 450 ±3
0.999MHz dB 36 30
0.603MHz µV/m 997 1995
0.999MHz µV/m 997 1995
1.404MHz µV/m 997 1995
0.603MHz dB 50 46
1.404MHz dB 30 24
dB 35 25
0.999MHz kHz 6 4 - 9
0.999MHz dB 20 15
100mV/m dB 45 40
% 1 3
% 3 6
W 5 4.5
dB 15 10
Hz 60/2200 120/2000
% 80 85
dB 36 30
mV 1 3
dB 64 70
kHz - 9
UNIT NOMINAL LIMIT
% ±1 ±3
% 0.25 0.38
g-cm 30 60
g-cm 60 140
W 5 4.5
dB 45 40
% 2 3
125Hz dB ±3 ±6
6.3kHz dB ±3 ±6
dB 40 30
dB 55 45
(w/o Tape) mV 30 50
(w/o Tape) mV 1 3
% 4 8
dB 55 48
dB 2 4
dB 40 35
125Hz dB ±4 ±7
6.3kHz dB ±4 ±7