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.
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
Characteristic measurement
Tape Deck
a
f
*1
CD section
CD
a
×
SVCD
×
×
*1: Possible when a flat cable between CN111 (MAIN board) and
CN502 (VIDEO board) is disconnected.
Procedure:
1. Press three buttons of
s
(DECK B),
A
(DISC 1),
and
s
(CD) simultaneously.
2. The
G
(CD) and
S
(CD) LEDs blink, and then pressing
G
(CD),
G
/
g
(DECK A), or
G
/
g
(DECK B) button can
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
button
CD AMS –
s
(DECK A),
S
(CD)
AMS +
s
(DECK A),
s
(CD)
FR
s
(DECK B),
S
(CD)
FF
s
(DECK B),
s
(CD)
Deck-A REW/AMS –
s
(CD),
g
(DECK A)
FF/AMS +
s
(CD),
G
(DECK A)
Deck-B REW/AMS –
s
(CD),
g
(DECK B)
FF/AMS +
s
(CD),
G
(DECK B)
Set
SYSTEM CONTROL terminal
SYSTEM CONTROL terminal
Connector cable (19P)
Pre-Main AMP
and Tuner Unit
AC IN
Power feed jig
(PFJ-1)
Connector cable (17P) of
attachment to power feed jig
Relay connector jig
(J-2501-174-A)
CD/TC signal
change switch
CN101 (19P)
SYSTEM CONTROL
terminal
system cable
Exclusive cable (15P)
P707, P909
Set
CDP/TC
ST
Connection:
Summary of Contents for HTC-NX300
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