Akai GXC 710 D Service Manual

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Akai GXC 710 D Service Manual

Extracted text from Akai GXC 710 D Service Manual (Ocr-read)


Page 2

STEREO CASSETTE DECK

MODEL GXC-7 1 0D
SECTION 1 SERVTCE MANUAL ..................... 1
SECTION 2 PARTS LIST ......................... 19

SECTION 3 SCHEMATIC DIAGRAM .................. 40

Page 13

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Fig. 10 Power Supply & OSC P.C Board CA-5015

RECORDING/PLAYBACK LEVEL ADJUSTMENT

Test Tape Adjustment
Step Adjustment Item Mode Result Remarks
Supply Signal Point
' 33 H V VRl, 1 kB
- Playback Level 3 ZD U PLAY 0 :15 dBm
Adjustment Test l-upe CA-SOH
Recording Level Low Noise Blank REC VR4, 20 kB Sci Tape
2 Adjustment Tape 1,000 Hz 0 VU and 05,5017 0 12 dBm Selector to
(low noise tape) recording PLAY LOW NOISE
Recording Level Chromium Dioxode REC Set Tape
3 Adjustment Blank Tape 1,000 Hz and -3 11.5 dBm Selector to
(chrome tape) 0 VU recording PLAY CHROME
1 F no L -IN ' B] k to tf >~
:51- y "T 01'850011" REC VRl, 300 kB - requgmy Deviation
on-e e , 2 es . r
4 - = ,eSp L 3" . and VRZ, 300 kB I pom- mm :15 dB
., 1' Adjustment 10,000 Hz -20VU 1.000 Hz to
. _ . PLAY CA-5015 (See Note 5)
(low noise tape) recording 10,000 Hz
NOTE: 1) Set output volume to maximum position. Chart-1

2) Set Dolby Noise Reduction switch to -OFF-.
3) Use only new tape as level variation is likely to occur when using old tape.
4) Set tape selector switch to -LOW NOISE- except in Step 3.

5) Following frequency response adjustment, check to confirm that recording/playback

level is the same. If levels differ, carry out Step 2 adjustment again.