Adjustment - JVC KD-NX901 Service Manual

4.1 Test instruments required for adjustment
(1) Digital oscilloscope (100MHz)
(2) Jitter meter
(3) Digital tester
(4) Electric voltmeter
(5) Tracking offset meter
(6) Test Disc : VT501 or VT502
(7) Extension studs : STDV001-3P
4.3 Connection method
Connection procedure
(1) Attach the front chassis assembly to the main board.
(2) Connect the front panel assembly to the main board.
(3) Attach the heat sink and rear bracket to the main board.
(4) Attach the extension studs to the DVD mechanism assembly.
(5) Attach the CPU board and HDD assembly with a card wire to the main board connecter.
(6) Connect the card wire from the CPU board to the DVD mechanism assembly.
DVD mechanism assembly
Extension studs
STDV001-3P
1-26 (No.MA161)
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SECTION 4

ADJUSTMENT

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4.2 Standard measuring conditions
Power supply voltage DC14.4V(11 to 16V)
Load impedance 4Ω
Output Level 20kΩ
Caution:
Be sure to attach the heat sink and rear bracket onto the power
amplifier IC and regulator IC respectively, before supply the
power. If voltage is applied without attaching these parts, the
power amplifier IC and regulator IC will be destroyed by heat.
Heat sink
CPU board
Main board
HDD assembly
Rear bracket
Isolator (cardboard etc.)