CDX-GT800D/GT805DX
4-4. CIRCUIT BOARDS LOCATIONY NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
SENSOR boardSERVO boardprinted in each block.)
For schematic diagrams.For printed wiring boards.
Note:Note:
Y All capacitors are in ?F unless otherwise noted. (p: pF)Y X : parts extracted from the component side.
50 WV or less are not indicated except for electrolyticsY Y : parts extracted from the conductor side.
and tantalums.Ya: Through hole.
Y All resistors are in & and 1/4W or less unless otherwiseY: Pattern from the side which enables seeing.
specified.(The other layers' patterns are not indicated.)
Yf: internal component.
Y C : panel designation.Caution:
Pattern face side: Parts on the pattern face side seen from the
Note: The components identified by mark 0 or dotted line(Side B)pattern face are indicated.
with mark 0 are critical for safety.Parts face side: Parts on the parts face side seen from the
tuner unitReplace only with part number specified.(Side A)parts face are indicated.
(TUX501)
Y A : B+ Line.
C
Y B : B� Line.
MAIN board
Y H : adjustment for repair.
Q
DISPLAY boardYVoltages and waveforms are dc with respect to groundThese are omitted
SUB PANEL boardunder no-signal (detuned) conditions.B E
BASE PANEL board
Y CD mechanism section (1/2), (2/2)
no mark : CD PLAY
Y Main (1/4), (2/4), (3/4), (4/4) and Display sections
no mark : FM/MW/LW
<> : CD PLAYBEC
?: Impossible to measureThese are omitted
YVoltages are taken with a VOM (Input impedance 10 M&).
Voltage variations may be noted due to normal production
Y Waveformstolerances.
YWaveforms are taken with a oscilloscope.E CB
N SERVO Board NVoltage variations may be noted due to normal productionThese are omitted
(CD PLAY)tolerances.
Y Circled numbers refer to waveforms.
Y Signal path.
1 IC2 5 (FEI)4 IC2 ia (RFI)7 IC3 ia (X1)
J: CD PLAY
YAbbreviation
F: FM
CH: Chinese model.
f: MW/LW
Approx.L : BUS AUDIO
0 V1Vp-p1.1 Vp-p
Approx. 100 mVp-p
12 MHz
50 mV/DIV, 5 msec/DIV0.5 V/DIV, 0.5 ?sec/DIV0.5 V/DIV, 0.2 ?sec/DIVN MAIN Board N
2 IC2 6 (TEI)5 IC2 of (FNI2), og (FNI1)1 IC551 0 (XT0)3 IC650 4 (OUT)5 IC303 qa (XOUT)
0 V2.1 Vp-p10 Vp-p3.6 Vp-p
1.5 Vp-p
Approx. 400 mVp-p8.664 MHz6 MHz
3 ?sec
200 mV/DIV, 5 msec/DIV0.5 V/DIV, 0.5 ?sec/DIV5 V/div, 1 ?sec/div1 V/DIV, 50 nsec/DIV1 V/DIV, 50 nsec/DIV
N DISPLAY Board N
3 IC2 wd (XI)6 IC2 oh (FPI2), oj (FPI1)1 IC901 qa (XOUT)2 IC801 ed (MCLKI)4 IC303 9 (XCOUT)6 IC620 4 (OUT)
0.6 Vp-p3.0 Vp-p11 Vp-p2.7 Vp-p
1.5 Vp-p3.2 Vp-p
32.768 kHz
16.9344 MHz11.2896 MHz
6.747 kHz2.97 ?sec
0.2 V/DIV, 0.2 ?sec/DIV0.5 V/DIV, 0.5 ?sec/DIV
1 V/div, 50 nsec/div1 V/div, 50 nsec/div1 V/div, 10 ?sec/div5 V/div, 1 ?sec/div
CDX-GT800D/GT805DX
2222 |
ACEC
