Akai GXC-750D

Adiustment Test Tape Adjustment °
Step Ttem Supply Sign al Mode Point Result Remark
1
19 kHz 19 kHz FL3 e Set MPX Filter
13 Filter from an STOP KMIOD 19B Sainete Switch to “ON”
Adjustment oscillator (CB-5201 A) ање (Веѓег го МОТЕ 9)
indication
PB Amp | Minimum | |
14 Bias Filter No Signal REC/ УШ 22mH AC Set Monitor Switch
Adi Input PLAY (СВ-5201А) Voltmeter to “ТАРЕ”
justment ы ы is
indication
”Minimum
PB Amp А FLI ; :
15 | Bias Filter e Signal a KM10D 1008 | ү, à 4. Бен
Adjustment арн (СВ-5201А) voimeter и
indication
Chart-2
NOTES: 1. Except for Steps 5, 7 and 8 set Tape Selector to LN position.
2. Set Dolby М.К. switch, Cal. Tone Switch to OFF position.
3. Except for Step 13, set MPX Filter switch to OFF position.
4. If a flat characteristic cannot be obtained from 1,000 Hz to 10,000 Hz at LN, LH, or Fe-Cr positions, fine
adjust at VR6 (LN), VR7 (LH), УЕ8 (Fe-Cr) respectively.
5. Recording level adjustment volumes (REC CAL) VR3 are not located on the pre amp P.C Board as in the
case of an ordinary tape deck, but are installed on the front panel.
6. If it does not comply with the specifications, repeat Steps 5 — 9 and re-adjust.
7. Because each of these adjustments are vital to perfect Dolby N.R. circuit operation, be sure that they are
carried out with as little error as possible.
8. Use the following cassette measuring tape:
LN Tape:
LH Tape:
CrO; Tape:
Fe-Cr Tape:
Fuji FL C-60, AKAI C-60LN
Maxell UD С-60
TDK SA C-60
SONY Duad C-60
9. Unless the core is moved intentionally this adjustment is not necessary.
10.
Stop recording Bias Oscillator while making Rec Peaking Adjustment. (Refer to Figs. 15, 16)
23