285 

 

Check CD shield wire 

Check enigne high 

voltage wire or other 

electric appliances 

CD-player consists back drop when 

operating 

Check CD disk 

Check the transfer switch 

between CD-player and 

radio 

Replace disk 

Check and 

maintain, bonding 

again 

Adjust or 

replace 

Check CD-player stabilitized 

power source and loudspeaker 

circuit 

Replace CD-player assembly

Adjust or 

replace 

Normal 

Abnormal 

Abnormal 

Abnormal 

Normal 

Normal 

Normal 

Normal 

 
 

 

 

286 

 

No. 208 Cassette stuck or failed to popup   

Malfunction Cause 

Solution 

Cassette deformed or damaged

Check c

①

assette surface, whether it is damaged or deformed, and

replace it when necessary. 

Hatch mechanism stuck or 
contains dirt 

Check the 

②

hatch, whether it is deformed. As well as the track, whether it

consist dirt. Maintain them when necessary. 

Check hatch 

③

track, whether it is too dusty, which results mechanism

stuck. Clean and lubricate when necessary. 

Cassette hatch button “EJECT” 
malfunction or damaged 

Press and check hatch button, whether it is functional. Inspect the

④
button, whether it is cracked or dropped from loader. Replace radio
assembly when necessary. 

Cassette stuck or 
failed to popup 

Loader stuck or damaged 

Press hatch popup button, inspect the operating condition of hatch 

⑤
link mechanism and loader. Remove radio cover, press popup button 
and indicate the malfunction position. Replace radio assembly when 
necessary. 

 

Replace radio assembly 

Check link mechanism of loader 

Check hatch button “ EJECT” 

Check cassette whether it is deformed 

Cassette stuck or failed to popup 

Hatch mechanism stuck or contains 

dirts 

Replace radio assembly 

Adjust or replace 

Replace cassette 

Replace radio assembly 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

 
 

 

 

287 

 

No. 209 Cassette speed abnormal, turned over automatically and chewed   

Malfunction Cause 

Solution 

 Power supply malfu

①

nction 

Check external power supply, whether the voltage is over load and

①
results inner appliances operating unstably. The normal value shal
between 12V and 14V approximately. 

 Sentus or deformation on 

②
cassette housing 

Sentus or deformation on cassett

②

e housing affects cassette 

operating and results low speed, unstably or chewed. Check and 
replace the cassette. 

 Button switch not in place

③

 

Button switch not in place, resulting all the link mechanism 

③
operating unreliably, and further causes cassette speed unstably or 
chewed. Check operating conditions of all buttons and link 
mechanism, and implement modification. 

 Drive gear worn

④

 

Drive gear worn seriously, resulting clearance increased between 

④
each gear, and further causes speed differential. As a result the 
cassette speed becomes abnormal, and may turn over automatically 
or chewed. Replace recorder assembly. 

 Drive belt skid or dropped

⑤

 

Drive belt skid or dropped, that is, the friction reduced between belt 

⑤
and motor/flywheel, which results motor speed lowered and unstably. 
Check drive belt, whether it is loose or dropped, and replace recorder 
assembly when necessary. 

 Drive motor brush worn seriously.

⑥

Drive motor brush worn seriously and fallen graphite powder results 

⑥
partly short circuit between the copper plates of commutator, and 
further causes motor speed lowered. Check the clearance and 
wearing condition between brushes, and replace recorder assembly 
when necessary. 

 Guide pulley low pressure or 

⑦
deformed 

Guide pulley low pressure or d

⑦

eformed, wearing or poor bearing 

lubrication will cause cassette speed lowered and unstably. Check 
guide pulley wearing and operating condition, and lubricate or replace 
recorder assembly when necessary. 

Cassette speed 

abnormal, 

turned over 

automatically 

and chewed 

 Speed regulator potentiometer of 

⑧
electric governor damaged 

The resistance of speed regulator potentiometer, electric governor, 

⑧
increased or decreased, as well as delayed diode open circuit or short 
circuit will result motor voltage raised or reduced, which causes motor 
speed unstable. Check the speed regulator potentiometer of electric 
governor circuit, whether it is damaged, and replace recorder 
assembly when necessary. 

 

 
 

 

 

288 

 

Inspect and replace 

Replace cassette 

Maintain power supply 

Replace CD-player/radio assembly 

Inspect speed regulator potentiometer electric 

governor circuit 

Inspect guide pulley operating condition 

Drive motor wearing condition 

Drive gear wearing condition 

Recorder button, damaged or not 

Cassette housing, damaged or not 

Power supply 

Cassette speed abnormal, turned over 

automatically and chewed 

Drive belt, loose or not 

Replace recorder 

Replace recorder 

Replace recorder 

Inspect and replace recorder 

Inspect and replace recorder 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

Abnormal 

Normal 

Normal 

Normal 

Normal 

Normal 

Normal 

Normal 

Normal 

Normal