Service manual
XG-XV1 E/A
I
TROUBLE SHOOTING TABLE
(Continued)
f
Are there signal inputs at
No
Pl404,
P1405 and SC1501?
NO
Are voltages applied to EA and
-w-e--
r-----
EB connectors?
t
Go to
“Checkrng
the PWB
’
I
Go to “Checking the clock
Yes
I
I
, performance”.
, ,
circuit and its peripheral
i
,
Check the power unit circuit. ,
’
I
circuits”.
I
--_----
----
-_I
I-----
-------
J
1
-mm__
-----w-J
+
Are there signal outputs at pins
(30) and (40) of
lCllO9,
No
IC1209
and IC1309?
Yes
-----------_
;
Check
IC1109,
IC1209,
I
t
ICl309
and their peripheral
t
Are there signal inputs at pin
No
(16) of
Kllll,
IClllO,
ICl210, IC1211,
ICI310
and
lCl311?
-
----- --
I
Check the switching circuit of
Yes
I
ICl104,
ICl204,
IC1304and
(
I
their peripheral circuits,,as well
i
I
as the amplifier circuit of
t
v
I
IC1102,
IC1202
and
IC1302
I
and their peripheral circuits,
i
Are there signal outputs at pins
-
-
-
-
-
-
-
-
-
-
-
-
-
’
(231,
(25),
(271,
(34,
(35)
and
(37) of
IClllO,
ICllll,
No
lCl210,
IC1211,
ICl310
and
ICl311?
------------
Yes
: Check the input and output
I
r
signals at
IC1106,
ICl206
and
t
1
ICl306.
Check also
IClllO,
,
ICllll,
IC1210,
IC1211,
I
t
IC1310,
IC1311,
and their
t
penpheral circuits.
I
v
-----_----_--
J
No
Are there signal inputs at
SC1
101, SC1201 and
SC1301?
NO
-------------
----__------
I
If there is no signal input at
I
t
pins (1) and (31) of
SC1
101, ,
, If there is no signal input at
I
I
SC1102andSCll03,check
,
r
__ ___
t
pins (15) and (30) of
the switching circuit and
,
SCllOl,
SCllOPand
t
amplifier circuit of ICI 112,
I
1
,
t
Check the
R,
G
and
B
panels.
(
, SC1 103, check
lC5509,
I
t
,
t
IC1113,
IC1212,
ICl213and
, ,
_
_
, lC5514, and their
, peripheral circuits.
I
t
IC1313,andtheirperipheral
,
----------
_I
------------I
t
circuits.
------_------
I
-------_____
1
Check
IC1406,
lC1407,
i
t
IC1408 and their
t
peripheral circuits.
I
L-----------
I
42