Sony HTC-NX300 Service Manual page 4

POWER SUPPLY DURING SERVICING
• As this set has not own power supply, it does not operate inde-
pendently. Therefore, during servicing, connect it to the Pre-
Main amplifier and Tuner Unit (STR-NX300) of MHC-
NX300AV.
Set
Pre-Main AMP
and Tuner Unit
AC IN
If STR-NX300 are not available, use the Power Feed Jig (PFJ-
1) and Relay Connector Jig.
In this case, after turn on the POWER switch on the Power Feed
Jig, supply power with the following methods.
[Note]
The Power Feed Jig (PFJ-1) is deficient in power to drive this
set.
The details are listed below. For the items with × marking, use
the STR-NX300.
Operation check
Tape Deck a
a
CD
CD section
×
SVCD
*1: Possible when a flat cable between CN111 (MAIN board) and
CN502 (VIDEO board) is disconnected.
Procedure:
1. Press three buttons of
and (CD) simultaneously.
s
2. The G (CD) and S (CD) LEDs blink, and then pressing
(CD), G / g (DECK A), or
make each play possible.
3. Also, the other functions are enabled by pressing two buttons
simultaneously.
A combination of respective functions and buttons is as fol-
lows.
function
CD AMS –
AMS +
FR
FF
Deck-A REW/AMS –
FF/AMS +
Deck-B REW/AMS –
FF/AMS +
4
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
Connector cable (19P)
Characteristic measurement
f*1
×
×
(DECK B), (DISC 1),
s A
G / g (DECK B) button can
button
(DECK A), (CD)
s S
(DECK A), (CD)
s s
s (DECK B), S (CD)
(DECK B), (CD)
s s
(CD), (DECK A)
s g
s (CD), G (DECK A)
(CD), (DECK B)
s g
(CD), (DECK B)
s G
Connection:
Connector cable (17P) of
attachment to power feed jig
Power feed jig
(PFJ-1)
CDP/TC
ST
P707, P909
G
Relay connector jig
(J-2501-174-A)
CD/TC signal
change switch
CN101 (19P)
SYSTEM CONTROL
terminal
system cable
Exclusive cable (15P)
Set