Akai GX-F25

Adjustment Test Tape Test Adjustment
ie Item Supply Signal Mode Point Parts Rosunl fe Reraais
T
Test tape ; VR2
1 PB Level (333 Hz) PB Line out (50 KB) —5.5 dBs +0.5 dB
Test tape PB : VRI
2 = +
2 PB EQ (10 kHz) | iN position Line out (5 KB) 19 dBs + 1 dB
1) Adjust the line output
LED Level 1 kHz from ED ive: | vn Peete 2 eBeyan
> | Meter § Osc BES Meter Q0 KB). |) oot volume:
satel 2) Adjust the LED Level
Meter indicates 0 dB with
VR.
. 16.7kHz,—25.5dBs! REC Figs. 12, 13, VLI Maximum voltage
; REC rEanins from OSC | LN position 14 (10 mH) (Note 4)
Frequency Pe URES CP SRBC EBS VRS | 1 kHz to 10 kHz |
> | Response (LN) | 1 KHZ: 1OKH2 | IN position | ®t | (oo KB) | flat level
a aaa —25.5dBs from OSC |“ P | |
LH Blank tape |
6 R sie 1 kHz, 10 kHz a a. Line out esc Same as above.
he ~25.5dBs from OSC | ~ P
CrO, Blank tape | REC/PB
i Sane 0,) 1 kHz, 10 kHz CrO, Line out core Same as above.
esponse\t'2)| 95 .5dBs from OSC | Position
Frequency Metal Blank tape REC/PB VR8
Response 1 kHz, 10 kHz Metal Line out (50 KB) Same as above.
(Metal) —25.5dBs from OSC | Position
LN Blank tape REC/PB VR3
9 REC Level 1 kHz, —5.5 dB LN Line out (20 KB) —5.5 dBs + 0.5 dB
from OSC | position 7
REC
10 Bias Filter No Signal Rec Volume | Line out FL 2 Minimum output
Max position
11 MPX Filter ry oe: ners Line out FL 1 Minimum output
Notes: 1. The Output Volume shoud be set at maximum position.
2. The Input Selector Switch set at “LINE”.
3
. Please use the following tapes as measuring tapes.
LN Tape : TDK LN2 C-60
LH Tape : MaxellUD = C-60
CrO, Tape : TDKSA C-60
Metal Tape : TDKMA-C C-60
4. Ground the base of TR17, as shown in Fig. 14, to stop the Bias Oscillator from oscillating when con.
ducting Rec peaking adjustment.