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When an error is detected, the FL tube alternately displays 
“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

The protection release state (POWER OFF) is established.
(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) 

During the protection state: 
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.) 

2.    The protection factor is displayed by pressing the  [FUNCTION], 

[

A

] and [

>

] buttons at the same time during the protection 

state

 

(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.

 

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.

When the optical pick-up assy is replaced, perform the 
“EXECUTING IOP MEASUREMENT”.

EXECUTING IOP MEASUREMENT (See page 22)

Procedure:
1.  Turn the power on.
2.  Input the following signal from Signal Generator to FM 

antenna 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.

The mark of “TUNED” means “The selected station signal is 
received in good condition.”

Ω)

HCD-DZ77T

Note:
•  All capacitors are in 

μF unless otherwise noted. (p: pF) 50 

WV or less are not indicated except for electrolytics and 
tantalums.

•  All resistors are in 

Ω and 1/4 W or less unless otherwise 

specifi ed.

•      f : 

internal 

component.

•  C : panel designation.

•  A : B+ Line.
•  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 

tolerances.

  no mark : TUNER (FM)
  <       > : DVD PLAY
       

*

  : Impossible to measure

•  Voltages are taken with VOM (Input impedance 10 M

Ω).

•  Circled numbers refer to waveforms.

• Signal path.
  F : 

TUNER

  J 

: DVD PLAY

  L : 

VIDEO

  E : 

Y

  a : 

CHROMA

  r  : COMPONENT VIDEO
  N : 

MIC

Note:
•  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.

 

 

Caution:
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.

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 

: 110 – 240V AC area in E model

 MX  : 

Mexican 

model

• Abbreviation
  E32 

: 110 – 240V AC area in E model

  MX 

: Mexican model

HCD-DZ77T