Technics SL-P110 - Page 25

vo * Check the traverse servo
y circuit Check point @
'YES Kick pulse is emitted in skip mode? NO .
— No (1401 23, 24 pins) IC401 defective
4 . » |C402 defective
pin)
.
YES
Check point @ v
YES
. . . 1C103
Traverse coil drive signal is emitted? NO ,
36 MHz) ? NO _| 1C301, X301 ; . » Q181 defective
*| R407, C403 defective (CN101 17 pin) Q182
YES
Check
point
@
YES
g “L (0V)"? NO | 1C401 defecti -
IC101 etective Speed sensor signal is emitted? NO | Speed } defective
(CN103 3 pin) | sensor
YES
? NO | Icio1 } defective | * Check the loading motor drive
) Q101 Check point @
YES Loading motor close/open command signal NO
itted?
NO
is
emitted?
1C401
defective
mitiec : » IC101 defective (IC401 33, 34 pins)
YES Check point @ YES
"2 NO IC101 ;
v > 1C401 } defective Loading motor drive signal is emitted? No | 16402 ,
(CN402 5 pin) » Q402, 403 defective
YES P motor
d down for a few NO | 51.«?14 142 } defective | ® Check the digital and audio
isc) Pickup Check point @
PCK signal is emitted? NO 1C304 .
[YES >
(Test pin TJ303) 1C301 } defective
1C101
NO Fsi;clgu } defective
P
.
YES
Check point )
CLK signal is emitted ? NO .
servo (CN401 5 pin) IC301 defective
(1C401
27
pin).
NO
|
ic101
.
.
YES
arch/skip. *| 1c401 defective | Check point @ Y
Spindle motor ON command signal is NO
YES “H (2.5Vv)"? IC301 defective
X (CN401 pin)
? NO
emitted? > |C101 defective
YES
vEs Check point € !
Data signal is emitted? NO - 1C301, 302 defective
itt‘?ldo?ljjt:ir:%er wire) NO i \c101 defective (IC801 2, 3, 5~18 pins) IC801
pi
YES Check point @ YES
. IC104 Deglitch signal is emitted? NO
2 [0} . g g 1C301 .
| is emitted? NO | qis1 } defective (Test pin TJ306) | 10302 defective
Q162
Check point @ v YES
Muting signal level is “L (0V)’? NO | 1C401 .
(Test
pin
TJ401)
™
1c803
defective
Check point @ ! YES
AF signal is emitted? NO
(Output terminal)
25—
1C802~804 defective