(No.YD007)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1
Different table of features
The following table indicates main different points between models HR-J4020UA, HR-J7020UA, HR-J4020UB and HR-J7020UM.
NOTE:
Mark
←
is same as left.
2.2
Service position
This unit has been designed so that the Mechanism and Main
board assemblies can be removed together from the chassis as-
sembly. Before diagnosing or servicing the circuit boards, take
out the major parts from the chassis assembly.
2.2.1 How to set the "Service position"
(1) Refer to the disassembly procedure and perform the disas-
sembly of the major parts before removing the Mechanism
assembly.
(2) Remove the screws that fix the Mechanism assembly to
the Chassis assembly. If any other screws are used to fix
the boards, remove them also.
(3) Remove the combined Mechanism and Main board assem-
blies.
(4) If any other major parts are used, remove them also.
(5) Connect the wires and connectors of the major parts that
have been removed in steps (1) to (4). (Refer to Fig. 2-2a.)
(6) Place the combined Mechanism, Main board and other
board assemblies upside down.
(7) Insert the power cord plug into the power outlet and then
proceed with the diagnostics and servicing of the board as-
sembly.
Note:
•
Before inserting the power cord plug into the power out-
let, make sure that none of the electrical parts are able
to short-circuit between the workbench and the board
assembly.
•
For the disassembly procedure of the major parts and
details of the precautions to be taken, see "3.1 Remov-
ing the major parts".
•
If there are wire connections from the Main board and
Mechanism assemblies to the other major parts, be sure
to remove them (including wires connected to the major
parts) first before performing step (2).
•
When carrying out diagnosis and repair of the Main
board assembly in the "Service position", be sure to
ground both the Main board and Mechanism assem-
blies. If they are improperly grounded, there may be
noise on the playback picture or FDP counter display
may move even when the mechanism is kept in an inop-
erative status.
•
In order to diagnose the playback or recording of the cas-
sette tape, set the Mechanism assembly to the required
mode before placing it upside down. If the mechanism
mode is changed (including ejection) while it is in an up-
side down position the tape inside may be damaged.
•
For some models, the mechanism and board assem-
blies are attached by connectors only. When carrying
out a diagnosis or repair of the boards in the "Service
position", make sure that the connectors are not dis-
connected.
HR-J4020UA
HR-J7020UA
HR-J4020UB
HR-J7020UM
POWER PLUG
IRAM
←
BRAZIL PLUG
SASO
HiFi HEAD
NOT USED
USED
NOT USED
USED
SHUTTLE SEARCH
(LATCH)-PAL
SP
×
7, LP
×
7
←
NOT USED
←
VIDEO SYSTEM
PAL-N (SP,LP) /
NTSC (SP,EP)
←
PAL-M/NTSC (SP,EP)
NTSC
→
PAL-M PB
(SP,EP)
PAL
→
PAL-M PB(SP,LP)
NTSC (SP,EP)
SQPB
NTSC (SP,EP)
←
PAL-M/NTSC (SP,EP)
NTSC (SP,EP)
RECORDING &
PLAYBACK SPEED
NTSC:REC:SP/EP,
PLAY:SP/LP/EP
PAL-N:REC:SP/LP,
PLAY:SP/LP
←
REC:SP/EP,
PLAY:SP/LP/EP
←
REAR AV INPUT TERMINAL
USED
←
←
NOT USED
STEREO DECODER
NOT USED
MTS
NOT USED
MTS
RF OUT CH/RF OUT SYSTEM [INITIAL]
[3CH],4CH,OFF/[N]
←
[3CH],4CH,OFF/[M]
←
CLOCK / SUMMER TIME ADJ.
24H / USED(MANUAL)
←
←
12H / NOT USED
AUTO SP
→
EP(LP) TIMER
SP
→
LP
←
SP
→
EP
←
DISPLAY TYPE
4-DOT LED
4-DIGIT LED
4-DOT LED
4-DIGIT LED
POWER OFF DIMMER
NOT USED
USED
NOT USED
USED
OSD LANGUAGES
SPANISH, ENGLISH
←
PORTUGUESE
SPANISH, ENGLISH
DISPLAY OFF
NOT USED
USED(with MENU)
NOT USED
USED(with MENU)
