Akai CS-F110 User manual

AKAI
Servite
manual
STEREO CASSETTE DECK
MODEL CS-Fl | O
MODEL CS-F21 O/J
MODEL CS-Fl 2

CS-F210
CS-F12
STEREO CASSETTE DECK
CS-F110
CS-F210/J
voor. CS=F'] 2
SECTION 1 SERVICE MANUAL .................... 3
SECTION ‘2. “FARIS. EIST 2 oo cee.5i3 bag do ee LS 23

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.
2:
en
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 conformance 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.
c> 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.

Hl.
VI.
vil.
Vil.
SECTION 1
SERVICE MANUAL
TABLE OF CONTENTS
SPECIFICATIONS. 65.556 oepec eG goa Wee RM Re ee AE 4
DISMANTLING OF UNIT... 0... ee 5
CONTROLS: so sac tid wea Sie teeveck Ben ee tee Spee eet Bade ante 6
1.Model CS-F110; CS-FI2. oye isi es hehe Ve web e eee ee 6
2: Model “CS-F210/3: 2)..5: ncvclnan peas bed ad ea cee hele Cha ele eas 7
PRINCIPAL PARTS LOCATION ........ 0.0.0.0... cece eee ee 8
1: Model. CS-F110,. CS-P12 > 5 god a Rate Seow BS aD ewe eA EA 8
2-Model <CS-F210/Ji. dirt gies Se oR En Oe eld og ER eX 9
VOLTAGE AND CYCLE CONVERSION ............. 0.0.0.0. 002 10
1. VOLTAGE CONVERSION ........ 0.0.00. 10
2; CYCLE CONVERSION onset cig tee eG a ee es dian 10
MECHANICAL AND HEAD ADJUSTMENT ....................08. 11
1. VARIOUS TORQUE MEASUREMENT ...............-00 000005 11
2. TAPE SPEED ADJUSTMENT ............. 0.0000 eee eee 11
3. RECORDING/PLAYBACK HEAD AZIMUTH ALIGNMENT ......... 11
AMPLIFIER ADJUSTMENT ........0. 0.0.0. e eee ee eee 12
DC RESISTANCE OF VARIOUS COILS ...................-.0.0.- 14
CLASSIFICATION OF VARIOUS P.C BOARDS ................... 14
1. P.C BOARD TITLES AND IDENTIFICATION NUMBER ........... 14
2. COMPOSITION OF VARIOUS P.C BOARDS .................... 15
For basic adjustments, measuring methods, and operating principles, refer to GENERAL TECHNICAL
MANUAL.
a ma a a ae ah a dN kT

I. SPECIFICATIONS
TRACK SYSTEM
4 Track 2 Channel Stereo System
TAPE Philips Type Cassette
TAPE SPEED 4.76 cm/s + 1.5% (1-7/8 ips. + 1.5%)
HEADS Erase head x 1
High density metallic head for Recording/Playback x 1
Electronically speed controlled DC motor
Less than 0.04% WRMS, 0.12% (DIN 45500)
90 sec. using a C-60 cassette tape
Normal: 30 to 15,000 Hz + 3 dB (-20 VU)
MOTOR
WOW & FLUTTER
TAPE WINDING TIME
FREQUENCY RESPONSE
CrO,: 30 to 16,000 Hz + 3 dB (-20 VU)
Metal: 30 to 18,000 Hz + 3 dB (~20 VU)
SIGNAL TO NOISE RATIO Normal: Better than 56 dB
CrO,: Better than 58 dB
Metal: Better than 58 dB
(measured via tape with peak recording level)
Dolby NR switch ON: Improves up to 10 dB above 5 kHz
HARMONIC DISTORTION Normal: Less than 0.8%
CrO,: Less than 0.8%
Metal: Less than 0.8%
INPUT MIC: 0.25 mV (input impedance 5.0 kohms)
Required microphone impedance: 600 ohms
Line: 70 mV (input impedance 47 kohms)
OUTPUT Line: 410 mV at 0 VU
Required load impedance: more than 20 kohms
Phone (CS-F12, CS-F210J only): 0.3 mW/8 ohms at 0 VU
Input: 2 mV (input impedance 10 kohms)
Output: 410 mV
Required load impedance: more than 20 kohms
POWER REQUIREMENTS 100V, 50/60 Hz for Japan
120V, 60 Hz for USA and Canada
220V, 50 Hz for Europe except UK
240V, 50 Hz for UK and Australia
110V/120V/220V/240V, 50/60 Hz internally switchable for other
countries.
440(W) x 103(H) x 233(D) mm
(17.3 x 4.1 x 9.2")
4.0 kg (8.8 Ibs)
U/T, JPN: 13W
CSA, AAL: 15W
DIN (CS-F12 only)
DIMENSIONS
WEIGHT
POWER CONSUMPTION
* For improvement purposes, specifications and design are subject to change without notice.
* “Dolby” and the Double D symbol are trademarks of Dolby Laboratories.
(Manufactured under license from Dolby Laboratories).

ll. DISMANTLING OF UNIT
In case of trouble, etc. necessitating dismantling, please dismantle in the order shown in the photographs. Reassemble
in reverse order.
es
SCREWS
SCREWS
SCREWS SCREWS
FRONT PANEL
UPPER COVER
SCREWS
|) Take out screws o to c and then take
SCREWS Operation BLK out from Front Pane!
2) Extencled the tab of Front Panel and
then take Bar Meter BLK out from Front Panel
UID PANEL

iil. CONTROLS
1. Model CS-F110, CS-F12
1.
POWER
SWITCH
10.
2.
CASSETTE
RECEPTACLE
11.
3.
EJECT
BUTTON
12.
4.
OPERATION
BUTTONS
13:
5.
RECORDING
LEVEL
CONTROL
(REC
LEVEL)
14,
6.
TAPE
COUNTER
and
RESET
BUTTON
15.
7.
TIMER
SET
SWITCH
16.
8.
HEADPHONE
JACK
(PHONES)
(CS-F12
only)
17,
9.
FLD
BAR
METER
18.
Fig. 1 Controls (CS-F110, CS-F12)
TAPE SELECTOR
DOLBY NR and FILTER SWITCH
RECORBING (REC) BALANCE CONTROL
MICROPHONE JACKS
LINE IN PIN-PLUG CORD (CS-F110)
LINE OUT PIN-PLUG CORD (CS-F110)
LINE IN JACKS (RIGHT and LEFT) (CS-F12)
DIN JACK (Some models do not have this facility.) (CS-F12)
LINE OUT JACKS (RIGHT and LEFT) (CS-F12)
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a
Se
Oe
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6
sie

2. Model CS-F210/J
|
Fig.2 Controls (CS-F210/J)
1.
POWER
SWITCH
11.
TAPE
SELECTOR
SWITCH
2.
CASSETTE
RECEPTACLE
12.
DOLBY
NR
and
FILTER
SWITCH
3.
EJECT
BUTTONS
13.
RECORDING
(REC)
BALANCE
CONTROL
4.
OPERATION
BUTTONS
14.
MICROPHONE
JACKS
5S.
RECORDING
LEVEL
CONTROL
(REC
LEVEL)
15.
HEADPHONE
JACK
(PHONES)
(CS-F210J)
6.
TAPE
COUNTER
and
RESET
BUTTON
16.
LINE
IN
JACKS
(RIGHT
and
LEFT)
(CS-F210J)
7.
TIMER
START
SWITCH
17.
LINE
OUT
JACKS
(RIGHT
and
LEFT)
(CS--210J)
8.
AUTO
PLAY
SWITCH
18.
REMOTE
CONTROL
JACK
(CS-F210J)
9.
OUTPUT
CONTROL
19.
LINE
IN
PIN-PLUG
CORD
(CS-F210)
10.
FLD
BAR
METER
20.
LINE
OUT
PIN-PLUG
CORD
(CS-F210)
SS eS
7

iV.
PRINCIPAL
PARTS
LOCATION
1. Model CS-F110, CS-F12
REC LEVEL
BAR
METER
VOLUME
VR3
OPERATION PCB
COUNTER
BLK
T2027C5030
ERASE
HEAD
TIMER
START
TAPE
SELECTOR
|
REC
BALANCE
LEFT
RIGHT
H902
SWITCH
SW3
SWITCH
SWI
|
VOLUME
VR3
REC/PB
HEAD
PHONES
JACK
DOLBY
NR
MIP
eee
H901
J6
SWITCH
SW2
(CS-FI2
ONLY)
Fig.3
Front
View
POWER
SWITCH
POWER
TRANS
aw
TI
R
SUPPLY
PCB
|
VOLTAGE
SELECTOR
PRE
AMP
PCB
pm
302785020
VSI
T2027A501A
VOLUME PCB
MOTOR
M9OI
T2027A50I1B
Fig.4 Top View
ae

LN
2. Model CS-F210/J
OPERATION PCB REC LEVEL
COUNTER BLK BARMETER T2028C50I0 VOLUME VR3
seeeeeRerTES
RMERRE TERE
ERASE
HEAD
TIMER
START!
PHONES
JACK|TAPE
SELECTOR
REC
BALANCE
LEFT
RIGHT
H902
SWITCH
SW3
J6
SWITCH
SWI
|
VOLUME
VR2
(CS-F2I03
vy
MIC
JACK
J5
REC/PB
HEAD
AUTO
PLAY
OUTPUT
DOLBY
NR
H901
SWITCH
SW4
VOLUME
VRI
SWITCH
SW2
Fig.5
Front
View
POWER
SUPPLY
PCB
POWER
TRANS
—
VOLTAGE
SELECTOR
PRE
AMP
PCB
T2027B5020
Tl
VSI
T2027A501A
POWER SWITCH DETECTION PCB METER PCB VOLUME PCB
SWI T2027A501C A2013C5030 7202745018
MOTOR M901
Fig.6 Top View