5.1.6 DETAILS

Self-check is performed for the following items.

Check item

Display

Description of detection

Diagnosis

Means of detection

signal (line)

 

 

 

 

 

 

 

 

 

Low bias line short

LOB

Low bias line (9V / 5V) short protector

Protector

Detection starts 3 seconds upon power

protection

 

activated.

 

on Turns off power if NG is detected

 

Confirm the operation of the low bais

 

within 400ms.

 

 

 

 

 

protection circuit.

 

 

 

 

[Q2802 /Q2801] (REGULATOR PWB)

 

 

Fan lock (stop)

FAN

Confirmation of operating stop of heat

Protector

Detection starts 3 seconds upon power

 

 

cooling fan.

 

on Turns off power if NG is detected

 

 

[IC8005 : 1 / 2 / 4 / 5-pin]

 

within 250ms.

 

 

(FAN CONTROL PWB)

 

 

 

 

 

 

 

AC timer clock

TIM

Not used

---

---

 

 

 

 

 

Presence of sync signal

SYNC

Confirmation of presence of video sync

SDA

Confirmation of presence of video sync

 

 

signal.

 

signal.

 

 

M : Main sync signal

 

 

 

 

S : Sub sync signal

 

 

 

 

HD : Component sync signal

 

 

 

 

[IC201] (ANALOG SIGNAL PWB)

 

 

MAIN CPU

MSM

Confirmation of ACK (response) signal

WAKE

If it checks whenever sync

communication

 

which used sync communications with

 

communicationwithSHMperformedand

 

 

Chassis CPU.

 

no reply of ACK signal an error will be

 

 

[IC7601] (DIGITAL SIGNAL PWB)

 

counted.

 

 

 

 

 

Digital tuner

DIGI

Not used

---

---

 

 

 

 

 

Memory for chassis CPU

MEM

Confirmation of reply of ACK signal which

SDA

If checks whenever I2C communication

 

 

used I2C communication.

 

is performed and no reply of ACK signal

 

 

[IC7602] (DIGITAL SIGNAL PWB)

 

an error will be counted.

AV switch

AVSW

Same as above

SDA

Same as above

 

 

[IC501] (ANALOG SIGNAL PWB)

 

 

 

 

 

 

 

3D YC separation

YC

Same as above

 

 

 

 

[IC1001] (DIGITAL SIGNAL PWB)

 

 

Audio process

AIO

Same as above

 

 

 

 

[IC1140] (RECEIVER PWB)

 

 

RF tuner

TUN

Same as above

 

 

 

 

[TU1101] (RECEIVER PWB)

 

 

 

 

 

 

 

Ghost reduction

GCR

Not used

---

---

 

 

 

 

 

DIST process

IP

Confirmation of reply of ACK signal which

SDA

If checks whenever I2C communication

 

 

used I2C communication.

 

is performed and no reply of ACK signal

 

 

[IC3001] (DIGITAL SIGNAL PWB)

 

an error will be counted.

 

 

 

 

 

RGB process

RGB

Same as above

 

 

 

 

[IC4001] ((DIGITAL SIGNAL PWB)

 

 

 

 

 

 

 

DVI transmission

DVI

Not used

---

---

 

 

 

 

 

Digital input receive

HDMI

Confirmation of reply of ACK signal which

SDA

If checks whenever I2 communication is

 

 

used I2C communication.

 

performed and no reply of ACK signal

 

 

[IC8001] (DIGITAL SIGNAL PWB)

 

an error will be counted.

 

 

 

 

 

(No.YA092B)1-35

Page 35
Image 35
JVC HD-52Z575 service manual Details

HD-52Z575 specifications

The JVC HD-52Z575, HD-61Z585, HD-61Z575, and HD-52Z585 are high-definition rear-projection televisions that were part of JVC's impressive line-up in the early 2000s. These models showcased the brand's commitment to providing quality home theater experiences with advanced features and technologies.

One of the standout characteristics of these models is their use of D-ILA (Direct-Drive Image Light Amplifier) technology. D-ILA is a type of liquid crystal display technology similar to LCoS (Liquid Crystal on Silicon) that enhances picture quality by delivering deeper blacks and more vibrant colors. This technology enables the TVs to produce stunning visuals with impressive contrast ratios, making them ideal for various viewing environments.

These models are available in different screen sizes, with HD-52Z575 and HD-52Z585 featuring 52-inch screens, while the HD-61Z585 and HD-61Z575 boast larger 61-inch displays. This range offers versatility for consumers, catering to different room sizes and viewing preferences.

All four models support 1080p resolution, providing an exceptional level of detail and clarity for HD content. This feature makes them suitable for viewing high-definition broadcasts, Blu-ray films, and gaming, allowing users to immerse themselves in their favorite content. The screens also feature a wide viewing angle, ensuring that everyone in the room gets a good view without compromising picture quality.

Connectivity is another strength of these JVC models. Equipped with multiple HDMI ports, component video inputs, and composite inputs, these televisions provide compatibility with a wide range of devices, from gaming consoles to DVD players. Users can easily connect their favorite devices, expanding their entertainment options.

In terms of audio, these JVC TVs are built to complement their visual capabilities, featuring integrated speakers that deliver decent sound quality for everyday use. For those who seek an enhanced audio experience, they offer optical digital audio outputs for external sound systems.

In conclusion, the JVC HD-52Z575, HD-61Z585, HD-61Z575, and HD-52Z585 are notable for their advanced display technologies, high-definition resolutions, and versatile connectivity options. Their D-ILA technology ensures a superior viewing experience, making these rear-projection TVs a compelling choice for any home theater enthusiast looking to enjoy high-quality visuals and sound. Although released in the early 2000s, these models remain a testament to JVC's dedication to innovation and excellence in the television market.