Akai AP-Q310 User manual

Neitz
QUARTZ FULL AUTO TURNTABLE
MODEL AP-Q310/C
This manual is applicable to both silver and pearl shadow panel models.
TABLE OF CONTENTS
SECTION 1 SERVICE MANUAL .....ccscsssesessseeneesssseetseetscseeeeee 3
SECTION 2 PARTS LIST............. Salebieted sates dbieassuaasavctectesese ieteesee 2D
SECTION 3 SCHEMATIC DIAGRAM ......cccsssesesseesetenetereetees 32

SAFETY INSTRUCTIONS
SAFETY CHECK AFTER SERVICING
Confirm the specified insulation resistance between power cord plug prongs and externally exposed parts of the set is
greater than 10 Mohms, but for equipment with external antenna terminals (tuner, receiver, etc.) and is intended for
or [A], specified insulation resistance should be more than 2.2 Mohms (ground terminals, microphone jacks,
headphone jacks. line-in-out jacks etc.)
PRECAUTIONS DURING SERVICING
1.
Parts identified by the A\ symbol parts are critical for safety.
Replace only with parts number specified.
In addition to safety, other parts and assemblies are specified for soa nniaes with such regulations as those
applying to spurious radiation. These must also be replaced only with specified replacements.
Examples: RF -converters, tuner units, antenna selector switches, RF cables, noise blocking capacitors, noise
blocking filters, etc.
Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
Use specified insulating materials for hazardous live parts. Note especially:
1) Insulation Tape
2) PVC tubing
3) Spacers (Insulating Barriers)
4) Insulation sheets for transistors
When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.), wrap
ends of wires securely about the terminals before soldering.
o> c>
Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.).
Check that replaced wires do not contact sharp edged or pointed parts.
Also check areas surrounding repaired locations.
Use care that foreign objects (screws, solder droplets, etc.) do not remain inside the set.

I.
I.
IV.
VI.
VIL.
Vil.
IX.
SECTION I
SERVICE MANUAL
TABLE OF CONTENTS
SPECIFICATIONS .......c.ccsccsssecssseccsssecessscssesecssaeeeseseeersessessnseeeeennees 4
DISMANTLING OF UNIT ........ccceceeesecssscecccnscnereceeseeessrsereeseeeeeenes 5
CONTROLS 6
PRINCIPAL PARTS LOCATION .,.....ccccssssssssssesssesssssseseeesecensenees 7
VOLTAGE AND CYCLE CONVERSION ........cssssssssccssrseceeseeeeeseces 8
1. VOLTAGE CONVERSION..........ceeceee obgastadetpindeassvistszacisceaneesee’ 8
2. CYCLE CONVERSION ..........:cccseescossssssescscerceenssesenseents seesesesenegens 8
ORDINARY ADJUSTRMENT ..........:ccsscccssssssreseccerssssreeeeessseneesens 9
1. STYLUS PRESSURE ADJUSTMENT ....ccssesssessecsssesssietsesenees rexede 9°
2. OVERHANG (Not necessary for AP-Q310/€)..... ci ceeiseesseniesceeeee 10°.
MECHANICAL ADJUSTMENT. ........cssccsscccscssscesesescsereesessensesenees 11
1. TONE ARM LIFTER ADJUSTMENT .....cccesssssessssstssssseesssssesssses 11
2. TONE ARM BRAKE ADJUSTMENT .0.....eeeccceescceseteeeettseeeneeees 12
3. -LEAD-IN/LEAD-OUT ADJUSTMENT 0.0... .cceeeeceeeesreeeeeeneeee 13
' 4, RETURN PLUNGER POSITION ADJUSTMENT... 13
ELECTRICAL ADJUSTMENT ...........cssccsssssssccctecccsssserecseteeseeeeee wee 14
1. OFF-SET VOLTAGE ADJUSTMENT (VR2, 3) AND
TORQUE DIFFERENCE ADJUSTMENT (VRI)...... eee 14
2. WOW AND FLUTTER CONFIRMATION .........ceesseseesseeeeeeee 14
CLASSIFICATION OF VARIOUS P.C BOARDS ..........cessssccesseess 15
1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS...... [Se
2. COMPOSITION OF VARIOUS P.C BOARDS oe eeeeeceeeceeees 16
For basic adjustments, measuring methods, and operating principles, refer to
GENERAL TECHNICAL MANUAL.

I.
SPECIFICATIONS
SSS
es
ts,
TURNTABLE
Aluminum
alloy
die
cast
DRIVE
SYSTEM
&
MECHANISM
Quartz
Locked
Direct
Drive,
Fully
Automatic
MOTOR
DC
servo
motor
SPEED
33-1/3
rpm,
45
rpm
SPEED
DEVIATION
+0.002%
WOW
&
FLUTTER
0.045%
(DIN),
0.03%
(JIS)
RUMBLE
48
dB
(DIN
A),
73
dB
(DIN
B)
TONE
ARM
Static
Balanced
Type
EFFECTIVE
ARM
LENGTH
220
mm
STYLUS PRESSURE ADJUSTMENT RANGE
0 to 2.5 grams
APPLICABLE
CARTRIDGE
WEIGHT
3
to
8
grams
ARM
LIFTER
Oil
damped
OVERHANG
17.5
mm
OFFSET
ANGLE
24°
HORIZONTAL
TRACKING
ERROR
ANGLE
+2°40'
(Outside)
—1°
(Inside)
CARTRIDGE
VM
(Dual!
Magnet)
type
(Model
AP-Q310
does
not
include
cartridge.)
OPTIMAL
STYLUS
PRESSURE
2
grams
OUTPUT
VOLTAGE
5
mV
(DIN)
CHANNEL
SEPARATION
20
dB
FREQUENCY
RESPONSE
20
to
20,000
Hz
CARTRIDGE LOAD IMPEDANCE
STATIC VERTICAL COMPLIANCE
STATIC HORIZONTAL COMPLIANCE
47 kohms
16 x 10-® cm/dyne
12.5 x 10-6 cm/dyne
DYNAMIC
VERTICAL
COMPLIANCE
4.5 x 10-° cm/dyne
DYNAMIC
HORIZONTAL
COMPLIANCE
4.5 x 10° cm/dyne
POWER REQUIREMENTS
100V, 50/60 Hz for Japan
120V, 60 Hz for USA and Canada
220V, 50Hz for Europe except UK
240V, 50 Hz for UK and Australia
110-120V/220-240V,
50/60
Hz
switchable
for
other
countries
POWER CONSUMPTION
DIMENSIONS
6W
440 (W) x 98 (H) x 359 (D) mm
(17.3. x 3.9 x 14.1 inches)
WEIGHT
5.4 kg (11.9 Ibs)
*
For
improvement
purposes,
specifications
and
design
are
subject
to
change
without
notice.

Wag
il. DISMANTLING OF UNIT
PLATTER
In case of trouble, etc. necessitating dismantling, please
dismantle in the order shown in the photographs.
Reassemble in reverse order.
BOTTOM
COVER
DUST COVER—>
SCREWS
RUBBER MAT

1.
45
rom
ADAPTER
HOLDER
13.
2.
HINGE
14.
3.
PLATTER
15.
4.
RUBBER
MAT
16.
5.
GROOVE
FOR
OVERHANG
ADJUSTMENT
17.
6.
SPINDLE
18.
7.
TONE
ARM
LIFTER
19.
8.
TONE
ARM
LIFTER
HEIGHT
ADJUSTMENT
SCREW
20.
9.
MAIN
WEIGHT
21.
10.
STYLUS
PRESSURE
SCALE
RING
22.
11.
ANTISKATING
ADJUSTMENT
23.
12.
LEAD-IN/LEAD-OUT
ADJUSTMENT
SCREW
Fig. 1 Controls
TONE ARM REST AND CLAMP
TONE ARM
CARTRIDGE RE-SETTING SCREWS
HEAD SHELL
CARTRIDGE (AP-Q310/C ONLY)
CUEING
(CUE)
LEVER(
W
TOLIFT,
W
TOLOWER)
SIZE/MANUAL MODE SELECTOR
POWER/REPEAT SELECTOR
QUARTZ LOCK INDICATOR
CUT/RETURN SWITCH
SPEED SELECTOR
ope
Mie
ng
ee
eee
Se
SS
SS
SSS

ee
IV. PRINCIPAL PARTS LOCATION
INTERMEDIATE ARM RESET SW
PCB sw902
FUSE PCB
POWER TRANS
T90l
MOTOR DDM-6F
M901
QUARTZ SERVO
PCB
PUSH SW PCB
MANUAL SW POWER SW QUARTZ LOOK CUT/RETURN SW
Sw904 sw90! PCB Sw903
SPEED SELECTOR SW
Swi
Fig. 2 Principal Parts Location (Bottom View)

V.
VOLTAGE
AND
CYCLE
CONVERSION
Fig. 3 Voltage Conversion (U Model only)
1.
VOLTAGE
CONVERSION
2.
CYCLE
CONVERSION
Models
for
Japan,
Canada,
USA,
Europe,
UK
and
Aus-
With
DC
servo
motor,
cycle
conversion
is
not
necessary.
tralia
are
not
equipped
with
this
facility.
Each
unit
is
preset
at
the
factory
depending
on
its
destin-
ation,
but
some
units
can
be
converted
to
110-120V
or
to
220-240V
as
required.
If
voltage
change
is
necessary,
this
can
be
accomplished
as
follows:
1)
Disconnect
the
power
cord.
2) Remove
the
bottom
cover.
3) Remove
the
existing
Line
Voltage
Fuse
and
insert
the
required
Line
Voltage
Fuse
in
the
proper
fuse
holder
according
to
the
printed
instructions.

VI.
ORDINARY
ADJUSTMENT
1. STYLUS PRESSURE ADJUSTMENT (Refer to Fig. 4)
MAIN WEIGHT
STYLUS PRESSURE
SCALE RING
ncaa | mama A
| apart
Fig. 4 Stylus Pressure Adjustment

1) Connect the Power Cord.
2) Set the ANTISKATING adjuster to ‘‘0”’.
3) Set the CUE lever to W.
4) Set the SIZE/MANUAL Mode selector to MAN-
VAL.
5) Unlock the Tone Arm and bring it towards the Plat-
ter.
* Remove the Stylus Guard being careful not to da-
mage the Stylus.
6) Set the POWER/REPEAT selector to “1”’.
The Tone Arm Lifter will be lowered.
7) With the Tone Arm held midway between the Tone
Arm Rest and the rim of the Platter, adjust the Main
Weight until the Tone Arm is in perfect horizontal
balance.
8) Without moving the Main Weight, rotate the Stylus
Pressure Scale Ring only to match the ‘0’ mark
with the mark on the weight shaft.
9) Depress the CUT/RETURN switch.
10) Lock the Tone Arm in place and rotate the Main
Weight counterclockwise, as viewed from the front
(the Stylus Pressure Scale Ring will move with it),
until the desired Stylus Pressure Scale indication is
at the mark on the shaft. The range of adjustment is
from 0 to 2.5 grams.
* For AP-Q310/C only: The recommended stylus
pressure for the cartridge supplied, PC-85, is 2
grams.
11) Set the ANTISKATING adjuster to the correspond-
ing stylus pressure.
2. OVERHANG (Not necessary for AP-Q310/C) (Refer to Fig. 5)
1 Spindle
2 Groove
The Distance between the Spindle and the Stylus when
the Tone Arm is centered over the Platter is known as the
Overhang.
Different cartridges require different Overhang Adjust-
ments.
For your convenience, the Rubber Mat has indicator
grooves at the center to facilitate Overhang Adjustment.
1) Center the Tone Arm over the Platter.
2) Adjust the Cartridge so that the Stylus position is even
with the Groove for Overhang Adjustment (middle
groove ring).
* The Cartridge position can be adjusted by resetting
the Cartridge Re-Setting Screws in the Head Shell.
10
Fig. 5 Overhang Adjustment

Vil. MECHANICAL ADJUSTMENT
REAR
af
ANGLE (A)
BRAKE LEVER
(b)(c)(d)
ELEVATION
LEVER(B)
ELEVATION LEVER (C)
CUEING LEVER
u)
FRONT
Fig. 6 Tone Arm Lifter Adjustment and Tone Arm Brake Adjustment
1. TONE ARM LIFTER ADJUSTMENT
(Refer to Fig. 6)
1) The height of the stylus point is adjusted when the
arm is lifted in AUTO PLAY and manually (cueing
lever).
will be about | - 2 mm higher than when the stylus
is lifted in AUTO PLAY. (Check by moving the
cueing lever W (UP)... W (DOWN).
a) Adjust the size selector to 17 cm.
b) Remove the rubber mat and platter and turn the
main gear 3/4 counterclockwise. (Lead in = arm
down > arm up = when returning)
c) Loosen the screws (b) and (c).
d) Check that the screw (a) is fully clockwise.
e) Set the cueing leverto W (UP).
f) Tighten the screw (b) slowly so that the stylus point
g) Tighten the screw (c) until the end almost touches
the elevation lever (c). (Cueing lever: VW )
h) While repeating the operation of W (UP) = W
(DOWN) of the cueing, tighten the screw (c) until
the stylus point hardly changes.
i) Have the auto return finished by turning the main
gear 1/4.
j) Paintlock the screws (a), (b) and (c).
ns
11

2) Tone Arm Lifter Height Adjustment (Refer to Fig. 7).
Puts Muaunpe meine weet aiiine anata:
totter ie
rte mney AS MMM HK
EAD-IN/LEAD-OUT
ADJUSTMENT SCREW
rc
TONE ARM LIFTER
HEIGHT ADJUSTMENT SCREW
Fig. 7 Tone Arm Lifter height Adjustment and Lead-IN/Lead-OUT Adjustment
With the Tone Arm in the up position, the Stylus should
be 5 to 7 mm above the surface of the record. If it is not,
adjust the height by adjusting the Tone Arm Lifter
Height Adjustment Screw.
Clockwise: down
Counterclockwise: up
2. TONE ARM BRAKE ADJUSTMENT
(Refer to Fig. 6)
The arm brake the horizontal movement of the arm to
have it move smoothly when AUTO LEAD-IN and
AUTO RETURN. AP-Q310 uses the friction of the felt.
1) Carry out I-1) a) and b).
2) Provide the horizontal balance of the tone arm. (It
means that the tone arm is away from the arm lifter).
3). Adjust the antiskating adjuster to 2.
4) When the screw (d) is loosened, the tone arm starts to
move toward the periphery (the situation where the
brake will not be functioning).
5) Have the tone arm move near. to the outer. periphery
of a 17 cm record, and tighten the screw (d) slowly to
the point where it does not move toward the outer
periphery any more even the hand is removed (point
where the brake starts to function). ,
6) From the status of 5), tighten the screw (d) one more
turn clockwise.
7) Paintlock the screw (d)._.
12

3. LEAD-IN/LEAD-OUT ADJUSTMENTS
(Refer to Fig. 7)
1) Lead-in position 2) Lead-out position
a) Place a record on the Platter. a) Auto-play the record and confirm where auto-
b) Auto-play the record and confirm where the Stylus return begins.
descends. ~ b) Turn the Lead-out Adjustment Screw with a screw-
c) Depress the CUT/RETURN switch to return the driver:
Tone Arm to the Tone Arm Rest. * The Lead-out Adjustment Screw is visible with-
d) Move the Tone Arm towards the Platter until the out moving the Tone Arm.
Lead-in Adjustment Screw is visible. Clockwise: To delay auto-return.
e) Turn the Lead-in Adjustment Screw with a screw- Counterclockwise: To hasten auto-return.
driver: NOTE: Carry out both adjustments little at a time and
Clockwise: To make the Stylus descend towards confirm the position after each adjustment.
the Spindle.
Counterclockwise: To make the Stylus descend
away from the Spindle.
4. RETURN PLUNGER POSITION ADJUSTMENT (Refer to Fig. 8)
MAIN GEAR
ue
Fig. 8 Return Plunger Position Adjustment
Press the reject lever down with a finger until the reject
plate touches the main gear pin. Operate the plunger
(SL901) in this position and adjust the installation screw
at exactly the point where the gap A between the reject
lever and plunger disappears. (Refer to Fig. 8)
After adjustment, confirm that the Auto Play is operat-
ing.
13

Vill. ELECTRICAL ADJUSTMENT
IC |
TC9I42eP
OFF -SET
VOLTAGE
G 2
VR3 VR2
F4 F3
IC2 LA6458S
CS
VRI
J!
Tomer Ge
DIFFEREN
10987654321
1. OFF-SET VOLTAGE ADJUSTMENT
(VR2, 3) AND TORQUE DIFFERENCE
ADJUSTMENT (VR1)
1) Disconnect the motor connection cord (J1).
2) Short connector (J1) pins (7), (8) and (1).
3) Set VR1 to the center.
4) Turn the power switch ON.
5) Connect an digital voltmeter to terminal (10) of con-
nector JJ and adjust VR3 until it reads —-120 mVDC.
6) Turn the power switch OFF.
7) Short connector (J1) pins (4), (5) and (1).
8) Turn the power switch ON.
9) Connect a digital voltmeter to terminal (9) of con-
nector J1 and adjust VR2 until it reads -—120 mVDC.
10) Turn the power switch OFF and connect the motor
connection wire to connector (J1).
11) Connect an oscilloscope to (9) and (10) of connector
(J1).
12) Turn the power switch ON.
13) Set the SIZE/MANUAL selector to MANUAL.
14) Turn the power switch ON to rotate platter.
15) Adjust VR1 so that the voltage of connector (J1)’s (9)
and (10) may be the same. (The voltage indicated in
(9) and (10) is for switching motor coil, and its fre-
quency is very low.
14
Fig. 9 Quartz Servo PCB (Parts side View)
2. WOW AND FLUTTER CONFIRMATION
!) Playback the test record (3,000 Hz).
2) Confirm that the Wow and Flutter is within 0.03%
GIS).
3) It not, re-adjust VR1, VR2 and VR3.

1. P.C BOARD TITLES AND IDENTIFICATION NUMBERS
IX. CLASSIFICATION OF VARIOUS P.C BOARDS
P.C BOARD TITLE P.C BOARD NUMBER * NOTES
Quartz Servo P.C Board P1022BS501A U
Quartz Servo P.C Board P1022B502A C,A
Quartz Servo P.C Board P1022B503A E,V,S
Quartz Servo P.C Board P1022B504A B
Quartz Servo P.C Board P1022B505A J
Fuse P.C Board P1022BS01B U
Fuse P.C Board P1022B502B C,A
Fuse P.C Board P1022B503B E, V,S
Fuse P.C Board P1022B504B B
Fuse P.C Board P1022B505B J
Push P.C Board P1022B501C U
Push P.C Board P1022B502C C,A
Push P.C Board P1022B503C E,V,S
Push P.C Board P1022B504C B
Push P.C Board P1022B505C J
Quartz Lock P.C Board P1022B501D U
Quartz Lock P.C Board P1022B502D C,A
Quartz Lock P.C Board P1022B503D E,V,S
Quartz Lock P.C Board P1022B504D B
Quartz Lock P.C Board P1022B505D J
Lead Switch P.C Board P1022BS01E U
Lead Switch P.C Board P1022B502E C,A
Lead Switch P.C Board P1022B503E E,V,S
Lead Switch P.C Board P1022B504E B
Lead Switch P.C Board P1022BS0SE J
Intermediate P.C Board P1022B501F U
Intermediate P.C Board P1022B502F C,A
Intermediate P.C Board P1022B503F E,V,S
Intermediate P.C Board P1022B504F B
Intermediate P.C Board P1022BS05F J

2. COMPOSITION OF VARIOUS P.C BOARDS
1) Quartz Servo P.C Board P1022B501A (U), P1022B502A (C, A), P1022B503A (E, V, S), P1022B504A (B),
P1022B505A (J)
faa]
oO
a
Oo
>
ea
uJ
”
N
k
[ea
<q
>
o
LOCATION OF
IC,TR & CONNECTOR
ict—2B TRI—IA
ICc2—IB TR2—I1A
TR3—IB
PI——-IC TR4—2B
P2-1,2A TRS5—2B8
TR6—1B
Ji-—1B TR7—2A
TRE—2A
TRO—IA
TRIO=IA
TRII-1A
TRI2-I1C
TRIZ—1B
TRI4-1B
TRIS~18
TRI6—2B
TRI7-2C
ECB ECB
2SA1015(Y,GR) ae iesng sora
2SC1815(Y,GR) 2S0863(E,F
2SC1959(Y)
TRI 10 4,610 8,10---
2SCIBI5(Y, GR)
TR5,9---2$A1015(0,Y)
TRIi----~2SCI959(Y)
TR12,14,16--~—----
2SD863(E,F)
TR13,15,17 ------=-
2S$B764(G, F)
WARNING: AINDICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY,
REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S
RECOMMENDED PARTS 7
AVERTISSEMENT: AIL INDIQUE LES COMPOSANTS CRITIQUES DE SURETE. POUR
MAINTENIR LE DEGRE OE SECURITE DE L'APPAREIL NE REMPLACER LES
CONPOSANTS DONT LE FONCTIONNEMENT EST CRITIQUE POUR LA SECURITE
QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT
16

2)
Push
Switch
P.C
Board
P1022B501C
(U),
P1022B502C
(C,
A),
P1022B503C
(E,
V,
S),
P1022B504C
(B),
P1022B505C
(J)
3)
Quartz
Lock
P.C
Board
P1022B501D
(U),
P1022B502D
(C,
A),
P1022B503D
(E,
V,
S),
P1022B504D
(B),
P1022B50SD
(J)
17

6
an
he
a
ee
ee
4)
Lead
Switch
P.C
Board
P1022B501E
(U),
P1022B502E
(C,
A),
P1022B503E
(E,
V,
S),
P1022B504E
(B),
P1022
B505E
(J)
LEAD
SW
PCB
PlO22B50I1E(U
PIO2Z2B502E(A
PIO22B503E(E
PIO22B504E(B
PIO22B505E(J
5)
Intermediate
P.C
Board
P1022B501F
(U),
P1022B502F
(C,
A),
P1022B503F
(E,
V,
S),
P1022BS504F
(B),
P1022BS05F
(J)
INTERMEDIATE
PCB
PI022B501F(U)
PIO22B502F(A,C)
P10
22B503F(E.V,S)
PIO22B504F(B)
PIO22B505F
(J)

6) Fuse P.C. Board P1022B501B (U)
FUSE PCB Pi022B501B (U)
WARNING: AINDICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY,
REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH MANUFACTURER'S
7)
Fuse
P.C
Board
P1022B502B
(C,
A),
P1022B505B
(J)
AVERTISSEMENT:
dh
Ik.
INDIQUE
LES
COMPOSANTS
CRITIQUES
DE
SURETE.
POUR
. MAINTENIR LE DEGRE_DE SECURITE DE L' APPAREIL NE REMPLACER LES
CONPOSANTS DONT LE FONCTIONNEMENT EST CRITIQUE POUR LA SECURITE
QUE PAR DES PIECES RECOMMANDEES PAR LE FABRICANT
FUSE PCB PIO022502B
(C,A)
PIO22505B (
‘19