Sony HCD-XB8 Service Manual page 17

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E-F Balance (1 Track Jump) check
oscilloscope
BD board
TP (TEO)
TP (VC)
Procedure:
1. Connect oscilloscope to test point TP (TEO) on BD board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in to play the number five track.
4. Press the "P (Pause)" button.
5. Check the level B of the oscilloscope's waveform and the A (DC
voltage) of the center of the Traverse waveform.
Confirm the following:
A – B
• x 100 = less then ± 7 (%)
2 (A + B)
• A + B = 500 ± 100 mVp-p
1 track jump waveform
0V
level : 500 mV ± 100 mVp-p
Adjustment Location:
[BD BOARD] (Conductor Side)
TP (RF)
TP
(VC)
TP
(FOK)
IC101
TP
(TEO)
IC102
TP
(FEO)
TP
(GND)
IC103
IC102
Center of the waveform
B
A (DC voitage)
Symmetry
— 17 —
SECTION 6
DIAGRAMS
6-1. CIRCUIT BOARDS LOCATION
PANEL board
HP/MIC board
TC-A SW board
CD-LED board
CD-A SW board
DOOR SW board
TC-B SW board
CD-B2 SW board
Note: pA is including in AUDIO board.
AUDIO board
(including p A)
TABLE SENSOR board
CD MOTOR board
TRANS board
TCB board (AEP, UK, East European, CIS)
FM/AM TUNER PACK
(ENCAPSLATED COMPONENT)
(EXCEPT AEP, UK, East European,
CIS)
SURROUND board
MAIN board
POWER board
CD-B1 SW board
p A
MOTOR board
LEAF SWITCH board
BD board
LED board
— 18 —
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