Aiwa CS-880E User manual

3-BAND STEREO RADIO
CASSETTE RECORDER
MODEL N O . C S b8 Ü Ü E j K l
AIWA8
[SERVICE MANUAL]
Code No. 29-880-000-18
DATE OF ISSUE 7/1981
G E N E R A L
Semi ondu tors:
Power sour e:
SPECIFICATIONS
Power onsumption:
Speakers:
Dimension:
Weight:
RADIO SECT IO N
Frequen y range:
Intermediate frequen y:
Sensitivity:
(IHF, TH D 3% )
(S/N 10 dB)
(S/N 10 dB)
Image reje tion:
IF reje tion:
Total harmoni distortion
17 10s, 1 F ET, 95 transistors,
68 diodes, 7 LED's, 1 LCD
E model
Batteries DC 13.5V (UM-1 x 9)
Ba k-up power supply (for tuner memory)
DC 3V (UM-3, "A A " x 2)
AC 110 ~ 120V/220 ~ 240V
swit hable 50/60 Hz
K model
Batteries, DC 13.5V (UM-1 or HP-2 x 9)
Ba k-up power supply (for tuner memory)
DC3V (UM -3orH P-7x2)
K model
AC 120V/240V
swit hable. 50/60 Hz
Car battery (thru ar adaptor)
E model
42W
K model
39W
14Omm0 x 2 (Woofer)
5Omm0 x 2 (Tweeter)
17Omm0 x 1 (Passive Radiator)
588(W) x 325(H) x 163(D) mm
8.6 kg
FM stereo separation:
Auto stop level: 22 ± 3 dB (at 1 kHz)
FM 22 ± 10 dB (at 98 MHz)
MW 60 ± 10 dB (at 1,008 kHz)
LW 65 ± 10 dB (at 245 kHz)
TA PE R EC O RD ER SEC TIO N
FM
MW
LW
FM
MW,
FM
14 ±
12 ±
12 ±
MW
47 ±
45 ±
42 ±
LW
55 ±
54 ±
55 ±
FM
MW
LW
FM
MW
FM
MW
87.5 ~ 108 MHz
522 ~ 1,611 kHz
146 ~ 353 kHz
10.7 MHz
LW 450 kHz
41 ± 5 dB (at 1,404 kHz)
45 ± 10 dB (at 344 kHz)
80 ±20 dB (at 88.0 MHz)
27 ± 5 dB (at 594 kHz)
Less than 1.5% (at 98 MHz)
1.7 ± 1.0% (at 1,008 kHz)
Tape speed:
Re ording system:
Erasing system:
Re ord bias frequen y:
Distortion:
Frequen y response:
Signal to noise ratio:
(Un-welghted)
Erasing ratio:
Separation:
Output power:
FF & rewind time:
Automati stop system:
Pin h roller pressure:
Wow and flutter:
Take-up torque:
FF & rewind torque:
Input terminal:
4.8 m/s. ± 3%
AC bias
AC erase
61 ± 0.5 kHz
Less than 1.5% (PB)
Less than 1.5% (REC/PB)
M ET AL tape 35 ~ 16,000 Hz
Cr02 tape 35 - 13,000 Hz
LH tape 35 - 12,500 Hz
More than 49/46 dB
[DC/AC] (PB)
More than 44/42 dB
[DC/AC] (REC/PB)
More than 60 dB
More than 38 dB (REC/PB)
More than 28W (14W + 14W)
90 ± 5 s. (at C-60)
Me hani al auto stop
125 + 15g (1.23 ± 0.15N)
Less than 0.038% (WRMS)
35 +^g g^ m (343 +^ g mN-m)
110 ± 20 g- m (1078 ± 196 mN-ml
MIC 3.5^ ja k x 2
PHONO pin ja k x 2
DIN 5P
Input sensitivity/impedan e:
6 dB (at 88.0 MHz) MIC
6 dB (at 98.0 MHz) DIN
6 dB (at 108.0 MHz) PHONO
5 dB (at 594 kHz) Output terminal: DIN
EXT. SP
5 dB (at 1008 kHz)
5 dB (at 14Ó4 kHz)
5 dB (at 155 kHz)
5 dB (at 245 kHz)
5 dB (at 344 kHz)
45 ± 6 dB (at 108.0 MHz)
PHO NES
0.3mV/3kfi
500mV/470kfi
4mV/47kf2
5P
3.50 ja k x 2
6.30 ja k
Noise redu tion system manufa tured under li ense from
Dolby Laboratories Li ensing Corporation.
Dolby and the □□ symbol are trademarks of Dolby Labo
ratories Li ensing Corporation.
Spe ifi ations and external appearan e are subje t to hange
without noti e due to produ t Improvement.

CS-880E,K jL AIWA
^-|L __ - - ---
DISASSEMBLING CHART OF MAIN PARTS
• To avoid troubles when disassembling or repla ing the main parts, follow the hart diagram as below.
DSL ir uit board
Main abinet Level meter
54 Display ir uit board
Dial plate
MS ir uit board
MD-3 me hanism
2

AIWA J
CS-880E,K
DISASSEMBLY INSTRUCTIONS
Remov ng the Ma n Case
1) Remove 11 s rews on the rear lid shown by arrows •
Install ng the Ma n Case
1) Che k that the fibre apper of the REC/PB PC Board (pattern
die) is fixed properly.
Q O I Firmly fix the fibre paper using two-sided tape, et .
be ause it is likely to lift up when it is peeled off
on e.
2) Lower all the lever swit hes in the dire tion of the arrow.
2) Remove 9 knobs. BBH8 3) Be sure to install in the order (1) — (3). Be areful: when
it is mounted in orre tly, it may damage the dial plate
and the display PC Boards, et .
E J ^ 3 ) Open the assette lid.
(It is not required to remove the assette lid)
4) Mat h the knobs while performing item 3) and tapping the
side.
3

CS-880E,K AIWÆ
IBBHI Removing the radio hassis
1) Be sure to remove the level meter before starting work to
prevent the pointer o f the level meter from being damaged.
2) Loosen the s rew and lift up the hook.
3) Remove 3 s rews and lift up the radio hassis in the dire tion
of the arrow. The radio hassis, REC/PB, tuner, MS and
display PC Boards are removed at that time.
Installing the radio hassis
1) Hook the ja k plate to the tab of the rear lid while paying
attention not to pin h the wire. Compress the radio hassis
against the dire tion of the arrow after he king that the
tuner PC Board is inserted into the rib.

AIWA ] ICS-880E.K
Remov ng Mechan sm
1) Loosen the s rew and remove the hook of the rod. 2) Remove 4 s rews.
5

CS-880E.K [ AIW A
Caut ons on D sassembl ng MD-3 Mechan sm
Disassemble or repair the MD-3 me hanism while paying attention
to the springs and levers, et . shown in the figure below.
the lever REC driver)
Be sure to hook the T-spring (PLA Y lever) to the am of the
gear when installing the gear PLAY.
Hook it from the inside of the gear using a lo k s rewdriver
as shown in the figure. Perform the same for the gear FR
and am gear PAUSE.
6

AIWA J
CS-880E,K
DESCRIPTION OF THE MD-3 MECHANISM
Descr pt on of the PLAY Operat on
With the plate button pressed, the trigger lever (PLA Y) moves in
the dire tion of the arrow <- (1), the gear (PLA Y) is released from
the boss of the trigger lever (PLA Y ) engages with the gear flywheel
and rotates in the dire tion of the arrow <- (2), the boss (A) of the
gear (P LA Y ) tou hes the trigger lever (PLA Y) and the gear
stops rotating.
When the gear (PLA Y) rotates, the lever (PLA Y) moves in the
dire tion of the arrow <- (3) along the am groove on the rear of
the gear to push up the operation hassis in the dire tion of the
arrow «- (4).
The PLA Y button whi h has been lo ked is released by pressing
the STOP button, the trigger lever (PLA Y) moves in the dire tion of
the arrow *- (5), the boss (A) of the gear (PLA Y) is released and the
PLA Y operation stops.
Gear, Flywheel
the boss (A) of the gear (PLA Y).

CS-880E.K -à . AIW A
Descr pt on of the F F Operat on
When the FF button is pressed, the trigger lever FF moves in the
dire tion of the arrow (1), the boss of the gear FR am is released
and engages with the gear wheel to rotate in the dire tion of the
arrow. <- (2), the boss (A) tou hes the boss of the trigger lever FF
and the gear FR am stops. The FR lever B moves in the dire tion
of the arrow «- (3) along the groove of the gear FR am, the F R
lever B moves in the dire tion of the arrow <- (3), the FR lever C
ompresses the gear of the FR lever Ass'y against the Take-up
reel dis ass'y to perform the FF operation.
Boss A FR lever B
8

AIWA J [_
CS-880E,K
REW Operat on
When the R EW button is pressed, the trigger lever R EW moves in
the dire tion of the arrow <- (1) and pushes the lever R EW in the
dire tion of the arro w <- (2). The trigger lever FF releases the boss
A of the gear at th at time, the gear FR engages with the gear fly
wheel, rotates in the dire tion of the arrow <- (3), boss B tou hes
the trigger lever F F and rotation stops.
The FR gear B is moved in the dire tion the arrow «- (4) by means
of the am of the gear FR following the rotation of the gear F R ,
pulls the FR lever C in the dire tion of the arrow «- (5) and moves
the FR lever ass'y in the dire tion of the arrow <- (6) to rotate the
Take-up reel dis reel dis ass'y to perform the REW operation.
9

CS-880E.K J [ AIW A
Descr pt on of the PAUSE Operat on
When the P A U SE button is pressed, the trigger lever PA USE moves
in the dire tion of the arrow *- (1), the boss A of the gear PA USE
is released, enages with the gear flywheel and rotates in the
dire tion of the arrow <- (2), the boss B tou hes the trigger PAU SE
and rotation stops.
The PAU SE lever moves in the dire tion of the arrow •*- (3) along
the am groove of the PAU SE gear at that time. The PLA Y idler
lever and the pin h lever ass'y is moved to perform the PAU SE
operation at that time.
When the PA USE button is pressed again, the button is released
from lo king and simultaneously the boss B of the gear PA USE is
released from the trigger lever PAU SE and the PAUSE operation
10