Samsung MAX-485 - Page 34

7-3-2. Troubleshooting
(1) DECK OPERATE PROBLEM
| POWER CHECK |
r anes
t
{
; @ Check power
/ @ Check voltage ROQ2, RO?
|
| RO2INPUT: 13V
| ROT INPUT: 21V
i OUTPUT : 13V
| OUTPUT: 12V |
[a a a a cSt ee at I i ee |
|
+
u-COM RESET CHECK (UIC1) 7
| ‘i VDD(pin 18} i
| sv
RES(pin 13)
|
MOTOROPERATE & SOLENOID CHECK |
| FUNCTION |
OPERATION
P/B DECK
Turn-on | | | |
Turn-on
OPERATION
DECK R/P
CHECK DECK CONNECTOR WIRE
e@ Check connection of 11pin connecting wire
Check connection of 13 pin connecting wire
—33—
(2) HIGH-SPEED DUBBING PROBLEM
L-COM & TR CHECK
| FUNTION | e
STEP
|
CONDITION
|
H/DUBBING
|NOR/DUBBING
|
| | _ PIN 80 of pascal H | L 4
2 | CQ10 [ Turnon | Turnoff
[33
|
cag
|__
Turn
off
Turn
on
(3) RECORDING PROBLEM
u-COM & TR CHECK |
Ir
i
7 FUNCTION
| STEP | CONDITION ae | REC |
| 1 | PICS ofeCOM TL |
| 2 | LQ1 Turn-ON “4 |
3 LQ2 ; Turn-off |
| 4 PIN 28 0f KIC | 6V |
j++ cs .
a
L.C2(473)
|
10V
|
| | Ieee es ae
FUNCTION
Turn on
JOAAL, 44R
PIN 4 of DICT H
PINS4 of VIC1_— | H ~ |
KO2L, 2R
TWIN] A
Turnon