Cassette Deck Section Adjustment - Akai AC-M2 Service Manual

6-3. CASSETTE DECK SECTION ADJUSTMENT (Refer to Fig. 6-1 and Fig. 6-2)
| .
Frequency
Response
Normal Blank
tape
1,000 Hz, 10,000 Hz
30 mV
Recording
SVR601
(Left)
SVR602
(Right)
REC/P.B
NOTE: 1. Use the Maxell UD C-60 for Adjustment step 3 and 4.
2. As the test tape has been changed, set to 180 mV when using 333 Hz test tape. For details, refer to Service
Guide (No. 0012) issued in Nov., 1982.
SERVICE MANUAL AC-M2
1,000 Hz to
10,000 Hz
flat
Adjustment Test Tape or Adjustment Result Rewcke
Item Supply Signal Point
Playback 333 Hz SVR301 180 mV e Connect a AC Voltmeter
1 es i or (Left) between TP-15 (Left),
(Se ces 2) 315 Hz SVR302 190 mV TP-16 (Right) and TP-14
vies Test Tape (Right) (GND).
e Set Beat Switch to
Bias Position 2.
2 Esscteac L603 85 kHz e Connect a Frequency
meq y Counter between TP-17
and TP-18 (GND). =|
| e TR611 (28C2236) Base
to GND.
Wainer Blank SVR303 e Tape Selector Switch to
3 Recording ne (Left) 0.4mvV Normal position.
Level 1.000 ns 300mV SVR304 : e Connect a AC Voltmeter
: (Right) between TP-11 (Left),
TP-12 (Right) and TP-13
(GND).
e Set Tape Selector Switch
to Normal position.
e Connect a AC Voltmeter
between TP-15 (Left),
TP-16 (Right) and TP-14
(GND).
13