Akai GX-260D User Manual

SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
1. SPECIFICATIONS 0056 Fiess Si Se a Seas ere ek ae gale a Sw ele ea gui sev ehe wh a 4
II. MEASURING METHOD ......:....-.- Bk Si guises wow as Bidid osetia bears bres oneea ee everest le 5
1. TAPE SPEED DEVIATION: ...0. 20.0 52.0 0. ee ce ede Do ec ee nel 5
2: WOW AND FLUTTER ® ¢o3 20:5 el cise ti see oe ee se abs ene ger ee lee eat 5
3. FREQUENCY RESPONSE ... 20.2 ce ee eee BEEN Lines ann. Sas 5
4. SIGNAL TO NOISE RATIO ... 0.6 ee ete ee eens ore
5. TOTAL HARMONIC DISTORTION... 0.2 ee ee ee ee 6
6: CROSS TALKS save scp be tre, gestae, sini) Roane chan sepie wid seria de te Pat eada va wy sy aber-eie eS ww 6
7. ERASE RATIO... ....... uciiet a thie cet a ase Wica,gulonietigere ken aad gcc (amae ess keel Bh acta 6
Hil. DISMANTLING OF UNIT .. 2.2.0 ce ee eee ee ene 7
TV. MECHANISM ADJUSTMENTS .. 2.02... 2. oc cee ee eee eee ee eee 10
1. BRAKE TENSION ADJUSTMENT ......... 0.020 Cube cece tee eee eee JQ
2, REEL HEIGHT ADJUSTMENT..... ab ae et ais t8 aan gpa AE fot eat 4 sty goa nate aria Nala lw, hams oe 10°
3. SUPPLY VOLTAGE TO BOTH TORQUE MOTORS AND TENSION
AT EACH MODE ...... 12
4, ADJUSTMENT OF PINCH ROLLER MECHANISM ........0 000 cece eee e eee 12
V.. - HEAD ADJUSTMENTS ¢ oe foe tue Sp ae ee eee ee HE wha Ea ee oe ee 13
1. HEAD HEIGHT ADJUSTMENT 2... 0.260 ee eee 13
2. HEAD AZIMUTH ALIGNMENT ADJUSTMENT... 2.2.2.0... 0.0.2 eee ee 14
VI. AMPLIFIER ADJUSTMENTS .... 0... 00. cee ce ce eee eee 15
1, PLAYBACK LEVEL ADJUSTMENT ... 2.02. cee ee eee ene 15
2. WU METER SENSITIVITY ADJUSTMENT .. 2.2... 0.0.2 e eee eee ee eee 15
3. RECORDING LEVEL ADJUSTMENT ... 2.2... 0. bce cee ee ee eee 16
4, RECORDING BIAS FREQUENCY MEASURING METHOD AND ADJUSTMENT .... 16
5, FREQUENCY RESPONSE ADJUSTMENT ........0 00-0 cece cence eens 17
6. ERASE:VOLTAGE (woe fo cee na Oe, @ Aas i OS oa gle ee a wee aaa eats 17
‘VIL. MECHANICAL OPERATING PRINCIPLES... 0.0.0 ee et ee eee 18
1, DIRECTION CHANGE OF MAIN MOTOR REVOLUTIONS .............0.000.. 18
2. TORQUE MOTOR SUPPLY VOLTAGE .. 22... eee 18
3. FORWARD MODE). wi... ese Po ate oa eg ee a SP Ge a pb es 18
4OREV MODE ode ee sracats en ape Ok hg Baw aS ee Ge eo ts boa G a aA anole eM ae dleey, Some A 18
5.-FAST FORWARD MODE: i303 eas GA ee gare aie bale eee See bbe asia’ s 18
6. RWD MODES 0) 6c he ee ee Eek ae an ps des ete EAR Se arta BEE Aap atwedes +++ 18
T STOR MODE 3g ce icatet eas oat See deere daa Bae eae bi Bia he Miah Date be ae LS 18

Akai GX-260D Specifications

General

Brand	Akai
Model	GX-260D
Category	Tape Deck
Language	English