Akai X-165D Service Manual

X. TROUBLE SHOOTING CHART
SECTION ‘‘A’’ TROUBLE WITH AMPLIFIER
1. Playback problems. (Unit set to play position.)
Silicon diode (SW05-02)
No sound from Line-out jack or R4-1KQ (2W) defective
No B (+), voltage supply
Playback amp. card and
+ l ete
B (+), voltage supply socket loose connection
P-10, J-10 loose connection
Check transistors
(TR-201, 202, 203 and TR-204)
Playback head coil open or lead wire loose
Silicon diode (SW05-02),
. ‘os a
Sound,
but
volume
insufficient
T.
(+),
voltage
low
R4
(1KQ)
Cl
(470uF),
C2
(1000uF)
B (+), voltage normal Dust adhering to head ———————
-~ transistors (TR-201, 202, 203
and TR-204)
Hum is decreased if playback
head is grounded
Hum bucking coil out
Loud hum
insulation defective
No change even when
playback
head
is
grounded
Ground
wire
loose
of adjustment
Playback head shield or
Cl (470uF), C2 (1000uF) defective
Inductive pick ae ieccin the recorder
Change the set position of the recorder
Irregular scratching or
Playback card and socket
crackling noise
loose connection
Transistor (TR-201, 202) defective
Squeaking noise
Tape itself defective
ee is magnetized
Tape itself noisy
Noise present
Hissing
noise
Le
playing
tape
Not caused by tape—————"_ —_ ——— Transistors (TR-201, 202) defective
|. adhering to head surface
Back tension weak
Poor contact between
head and tape
Lack of treble
Head angle incorrect Re-adjust head angle
Head worn out Replace
Tape itself defective
Sound distorted Dust adhering to head surface——————
oss transistors ———__———-
Replace
Head worn out
Replace
Clean the head
Replace
mas (itis adhering to head surface
Replace
Adjust
Adjust
—-~— Replace
Clean
ee Readjust
Replace
Adjust
——— Replace
Adjust
Replace
Clean
Replace
Demagnetize head
Replace
———-Replace
Clean
Adjust tension of
supply spindle
18

Akai X-165D Specifications

General

Brand	Akai
Model	X-165D
Category	Tape Deck
Language	English