This is the 65 pages manual for Akai MPC 60 Service Manual.
Read or download the pdf for free. If you want to contribute, please mail your pdfs to firstname.lastname@example.org.
PRECAUTIONS DURING SERVIDING
l, Pans identiﬁed by the [5 symbols are critical for safety.
Replace only with pans number speciﬁed.
2. In addition to safety, other parts and assemblies are
speciﬁed for conformance with such regulations as those
applying to spurious radiation.
These must also be replaced only with speciﬁed
Examples: RF converters, tuner units, antenna selector
switches, RF cables, noise blocking capacitors, noise
blocking ﬁlters, etc.
3. Use speciﬁed internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
4-. Use speciﬁed insulating materials for hazardous live parts.
1) Insulation Tape
2) PVC tubing
3) Spacers (Insulating Barriers)
4) Insulation sheets for transistors
5) Plastic screws for ﬁxing microswitch (especially in
5. When replacing AC primary side components (transform-
ers, power cords, noise blocking capacitors, etc), wrap
ends of wires securely about the terminals before soldering
6. Observe that wires do not contact heat producing parts
(heatsinks, oxide metal ﬁlm resistors, fusible resistors,
SYMBOLS FOR PRIMARY DESTINATION
Alphabet indicates the destination of the units as listed below.
Symbols Principal Destinations
Europe (except UK)
W. Germany only
7. Check that replaced wires do not contact sharp edged or
8. Also check areas surrounding repaired locations
9. Use care that foreign objects (screws, solder droplets, etc.)
do not remain inside the set.
SAFETY CHECK AFTER SERVICING
Conﬁrm the speciﬁed insulation resistance between power
cord plug prongs and externally exposed pans of the set is
greater than 10 M ohms, but for equipment with external
antenna terminals (tuner, receiver, etc.) and is intended for
or , speciﬁed insulation resistance should be head-
phone jacks, line-in—out jacks, etc. more than 2.2 M ohms
(ground terminals, microphone jacks).
PRECAUTIONS FOR LITHIUM BATTERY
The lithium battery may explode when heated excessively
[OBSERVE THE FOLLOWING WHEN REPLACING]
0 Replace with the same make and type only.
0 Use soldering iron in "recommended way" only.
0 Place battery in correct polarity.
0 Do not short the terminals.
0 Do not recharge battery.
0 Do not dispose of battery in ﬁre.
[DANGER] [RECOMMENDED WAY]
( V E B S Model only)
Before connecting the power cord, set the VOLTAGE
SELECTOR located on the bottom plate with a screw-driver
so that the correct voltage is indicated.
220v [11:] 240v
5-1. Adjustment of A/ D converter OFF—SET
1. Select "2) ADC Monitor" by pressing the DATA ENTRY
key, Then the LC-display will change as shown below
indicating that the unit enters the OFF-SET adjustment
mode. (Refer to Fig. 5-3).
3. Connect the oscilloscope to terminal of ASSIGN—
m located on the rear panel. (The
attenuation level can be altered in 6dB steps with the
DATA CONTROL dial. The adjustment range is between
36dB and 48dB.)
It“ notches appear in thel waveform displayed on the
oscilloscope as shown Fig. 5-6, adjust VRl on the VOICE
PCB as shown Fig. 5-7.
ADC Monitor =
ADC Value = 0008
(Press ENTER to return to main menu)
2. Set the indicated ADC-value between 0003 and 000E by
adjusting VR2 on the ADC PCB.
3. Press the ENTER key when the adjustment is completed.
5-2. D/A converter MSB-adjustment (VOICE PCB)
1. Select “1) DAC Trim (15 Hz out #8)” by pressing the
DATA ENTRY key. The LC-display will change as
shown below, indicating that the sine wave for MSB
adjustment is being loaded. (Refer to Fig. 5—4)
== DAC Trim =
5-3. Adjustment of D/A converter OFF-SET
1. At ﬁrst, switch the MCP60 OFF to terminate the test
mode. Then switch power ON again, and load the data
of the DRUM SOUND DATA “STUDIO-SET" (Stan-
dard accessoriesjin DISK mode.
Loading sine wave into sound memory...
Fig. 5.4 2. Press the “FULL LEVEL" key on the left of the front
panel to set the unit to FULL LEVEL mode. Press the
“BASS DRUM" pad and adjust each VR so that there
is no click noise during sustain. The outputs and their
corresponding VRs are as follows.
2. Then the following screen will appear to indicate that the
sine wave has been loaded and the M38 adjustment mode
is set. (Refer to Fig. 5-5)
ASSIGNABLE MIX OUT 1 ..
MIX OUT .........................
STEREO OUT RIGHT CH
STEREO OUT LEFT CH....
== DAC Trim =
15 Hz signal preset: at Output #8
Note: Connect the corresponding output of the MCPGO
to an ampliﬁer and adjust each VR according to the
sound coming out of the speaker.
Attenuation: 42 db
(Press ENTER to return to main menu)
VII. PARTS LIST
HOW TO USE THIS PARTSlLIST
1. This Parts List lists those parts which are considered necessary for repairs Other common parts, such as resistors and
capacitors, are listed in the “Common List for Service Parts" from which these parts should be selected and stocked
2. The Recommended Spare Parts List shows those parts in the Parts List which are considered particularly important
3. Parts not shown in the Parts List and “Common List for Service Parts” will not in principle be supplied.
4. How to read the Parts List, ,
a) Mechanism Block b) PC Board
2. HEAD BASE BLOCK . 6. MAIN PC BOARD
ﬁg“ PART NO. DESCRIPTION :3“ PART No. DESCRIPTION
2-1): BH-T202 3A320A HEAD BASE BLOCK s-rcr El-324536 IC HD14049BP
2~2 HH—izzosAoloA HEAD R/P PR4-8FU c are: EI-336801 rc M38841-564M
2»3 25477376 PANzoxoasTL CMT 6-ClA 50333399 C MMY v 223M zsoAc [U,E,B,S]
2-4 zs-sas4ss BinzoxosSTL CMT ecu; lac-350949 C MMY v 223M1250DC [I]
25 26-402895 SP cs ANGLE ADJUST s-Crc lac-333397 c MMY v 223M 125AC [C,A]
a-xr EI-313354 osc X’TAL NC—isc :1—
Symbols for primary destination
[B] : BEAB(England) [U] : U/T(Universal Area)
[C]:CSA(Canada) [V] : VDE(W. Germany)
[B] : CEE (Europe) [Y] : Custom Version
This number corresponds with the Figure SP (Service Parts) Classiﬁcation
Number. These reference symbols correspond with
component symbols in the Schematic
SP (Service Parts) Classification
A small “x" indicates that this part is not
shown in the Photo or Illustration.
This number corresponds with the indi-
vidual parts index number in that ﬁgure,
The available PC Board Blocks are listed separately.
5, When Part No. is known, Parts Index at end of Parts List can be used to locate where that part is shown in Parts List
by its Reference No. listed at right of Part No.