Sony DAV-JZ8888K / HCD-JZ8888K Service Manual ▷ View online
HCD-JZ8888K
17
9. AMP TEST MODE
• This mode is used to measurement and test of the AMP con-
nection.
Procedure:
1. Press the [
1. Press the [
?/1
] button to turn the power on.
2. Press three buttons [
x
], [
N
] and [
Z
] simultaneously. When
the this mode, blink to segments (“SA-CD” and “CAT”) on FL
display.
display.
3. Press [DISPLAY] button of the remote commander. When the
this mode is displayed as “MEASURE” on FL display.
Whenever the [DISPLAY] button is pressed, the AMP test
mode changes in the following order.
mode changes in the following order.
MEASURE t SAFETY
MEASURE: AMP measurement mode
SAFETY:
SAFETY:
AMP regulations, temperature, character mode
4. Press [MUTING] button on the remote commander. When the
this mode is displayed as “VOL N” on FL display.
Whenever the [MUTING] button is pressed, the VOL test
mode changes in the following order.
VOL N t VOL M/M
VOL N:
Turn the [VOLUME] control, the display is
change in succession (MIN y MAX)
change in succession (MIN y MAX)
VOL M/M: Turn the [VOLUME] control in the direction of
(+) is change to “MIN”, turn the direction of (–)
is change to “MAX”.
is change to “MAX”.
5. To exit from this mode, press the [
?/1
] button to “COLD RE-
SET” and turn the power off.
10. DEMO PLAY MODE OUT
It is a mode to release the demonstration reproduct by the dedi-
cated demonstration disc.
1. During playback the DEMO Disc, press the [
It is a mode to release the demonstration reproduct by the dedi-
cated demonstration disc.
1. During playback the DEMO Disc, press the [
x
] and [
N
] but-
tons for fi ve seconds simultaneously.
2. The message “DEMO OFF” is displayed, a mode to reproduct
the demonstration is released.
11. DMPORT (DIGITAL MEDIA PORT) TEST
1. Connect the DMPORT CHECK JIG (P/N: J-2501-309-A) with
1. Connect the DMPORT CHECK JIG (P/N: J-2501-309-A) with
the terminal DMPORT.
2. Press the [
?/1
] button to turn the power on.
3. Confi rm that both LEDs of the DMPORT confi rmation JIG
lights. (Confi rmation the power supply line.)
4. Set the [FUNCTION] button with “DMPORT” on this model.
5. Press three buttons [
5. Press three buttons [
x
], [
N
] and [FUNCTION] simultane-
ously, the DMPORT test mode is activated.
6. It is confi rmed that “DMPORT OK” is displayed on this set
display. (Confi rmation of communication line)
7. To a pin jack of the DMPORT confi rmation JIG input informa-
tion relevant to audio signal (sine-wave 1.0Vrms) and compos-
ite video signal (white 100% 1.0Vp-p, color bar, etc.)
ite video signal (white 100% 1.0Vp-p, color bar, etc.)
8. Confi rm the output of speakers and monitor TV. (Confi rmation
of analog signal)
9. To exit from this mode, press three buttons [
x
], [
N
] and
[FUNCTION] simultaneously.
color pattern
generator
DMPORT
CHECK JIG
(P/N: J-2501-309-A)
MAIN
board
TV
SET
CN451
J4001
J001
V
AF oscillator
FL speaker,
FR speaker
IO-COMPONENT
board
SP board
TB301
VIDEO
AUDIO
HCD-JZ8888K
18
12. PROTECTION FACTOR (SD DETECTION/
DC DETECTION) IDENTIFICATION TEST MODE
When an error is detected, the FL tube alternately displays
“PROTECTOR h PUSH POWER”.
“PROTECTOR h PUSH POWER”.
r
Press the [
?/1
] button.
* Buttons other than the [
?/1
] button are invalid.
“STANDBY” blinks three times on the FL tube.
r
r
The protection release state (POWER OFF) is established.
(No FL tube display)
r Press the [
(No FL tube display)
r Press the [
?/1
] button two times.
The power to the system turns on, and the normal operation is
established. (Restore)
established. (Restore)
During the protection state:
1. If the AC plug is connected or disconnected during the
1. If the AC plug is connected or disconnected during the
protection state, the protection state is released, and the
normal operation is established. (The protection state is not
maintained.)
normal operation is established. (The protection state is not
maintained.)
2. The protection factor is displayed by pressing the [RETURN]
t [3] t [2] t [0] t [0] t [ANGLE] buttons of the
remote commander.
(during the “PROTECTOR h PUSH POWER” display).
k When SD is detected: Repeats
“SD
DETECT
h PROTECTOR”.
k When DC is detected: Repeats
“DC
DETECT
h PROTECTOR”.
PL: SD detection
When the “L” output from the SD (shutdown) port on the
S-MASTER POWER Driver Shutdown and voltage descent
(15V or less) of 30V power supply (PVDD) are detected.
S-MASTER POWER Driver Shutdown and voltage descent
(15V or less) of 30V power supply (PVDD) are detected.
DC
detection
When the “L” output from the power/speaker error detection
circuit (DC detection port) is detected for two seconds
continually, the power system other than that of the FL tube
is turned off, and the protection state is established.
circuit (DC detection port) is detected for two seconds
continually, the power system other than that of the FL tube
is turned off, and the protection state is established.
HCD-JZ8888K
19
SECTION 4
ELECTRICAL ADJUSTMENTS
When the optical pick-up assy is replaced, perform the
“EXECUTING IOP MEASUREMENT”.
“EXECUTING IOP MEASUREMENT”.
EXECUTING IOP MEASUREMENT (See page 14)
[FM Tune Level Check]
Procedure:
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
1. Turn the power on.
2. Input the following signal from Signal Generator to FM an-
tenna input directly.
* Carrier Freq : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation : 75 kHz
Modulation : 1 kHz
ANT input : 35 dBu (EMF)
Note: Please use 75 ohm “coaxial cable” to connect SG and the set. You
cannot use video cable for checking.
Please use SG whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C signals.
The mark of “TUNED” means “The selected station signal is re-
ceived in good condition.”
ceived in good condition.”
DVD SECTION
TUNER SECTION
generator
OUT (75
:)
SET
FM ANTENNA
HCD-JZ8888K
20
SECTION 5
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in
• All capacitors are in
μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
• C : Panel designation.
• C : Panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages and waveforms are dc with respect to ground in
service mode.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
no mark : TUNER (FM)
< > : DVD PLAY
< > : DVD PLAY
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
Ω).
• Circled numbers refer to waveforms.
• Signal path.
F :
F :
TUNER
J
: DVD PLAY
L :
VIDEO
E :
Y
a :
CHROMA
r : COMPONENT VIDEO
N :
N :
MIC
• Abbreviation
E32
E32
: 110 – 240V AC area in E model
MX
: Mexican model
SP
: Singapore model
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• a :
• X : Parts extracted from the component side.
• a :
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
• Abbreviation
E32
E32
: 110 – 240V AC area in E model
MX
: Mexican model
SP
: Singapore model
• Circuit Boards Location
SP board
DSP board
IO-COMPONENT board
MAIN board
POWER board
MS-203 board
P-LED board
U-LED board
J-LED board
KEY-SW board
FL-JACK board
SCORE board
USB board
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